U.S. History: 250 Most important Events

In this project I have listed 250 of the United States’ most important events and with each listing I have written a short paragraph about my reasoning for its rank. Most of the events that I have listed are controversial in their ranking but generally, I believe that they belong where they have been placed. These events are listed based on their impact on American society and the overall contributions they have made. Below the 100 mark on my list was very difficult to rank as these events could be argued to have a higher or lower ranking but I did my best. 

1. September 7, 1787: The Constitution of the United States is written and signed.

The creation of the Constitution of the United States is the most important event in the History of the U.S. because it is a document that establishes the U.S. national government, guaranteed basic rights for its citizens, and fundamental laws. This document demonstrates how the country should be run and consists of a system of checks in balances to ensure that no one branch of government will have more power than the other. Additionally, it describes the duties and purposes of the government and it divides power between the states and the federal government. Along with these issues, the adoption of the first 10 amendments has stood as proof of the guaranteed rights of U.S. citizens. All of the subjects that this landmark document discusses are all to help protect the freedoms and rights of its citizens under this new government; this marks the first time that a country has ever allowed its citizens to select their choice form of government and was revolutionary as it puts governance in the hands of the people which we see the benefit of today. 

2. July 4, 1776: The Declaration of Independence (from Great Britain) 

The writing of the Declaration of Independence is #2 most important event in United States history because this marked the point at which the thirteen colonies have (generally) agreed to separate from Great Britain. The colonies believed that they had not received fair treatment from their government and this marks this first time (not just in U.S. history but) world history where a  new nation based on the First Principles of the rule of law, unalienable rights, limited government, equality, the Social Compact, and the right to change or abolish an oppressive government. The document was designed for: The World, the King, and the Colonists. The goal of the Declaration of Independence was to announce to the world the creation of a new country, to win the support of other Foreign countries, and to rally the troops. Today, this document has paved the way for equality among all men and women and holds the utmost relevance in today’s conversations and activism on equality in the United States. 

3. April 19, 1775 – September 3, 1783: The Revolutionary War

The Revolutionary War showed how a small nation of thirteen colonies could defeat and win their freedom from perhaps the greatest military force during the time. The Revolutionary War also marked an end to mercantilism in the thirteen colonies were new markets and trade relationships were opened. Today, the United States benefits from the freedom it has from  Britain and instead of a democracy, the U.S. has become a constitutional republic as a result of this event. 

4. May 25 – September 17, 1787: Constitutional Convention to establish the Ten Amendments  

The first Constitutional convention is an important part of the U.S. History because this set the United States towards becoming a true Constitutional republic by addressing the problems of the weak central government that had existed under the Articles of Confederation.

5. October 27, 1787: Federalist Papers start appearing in New York newspapers under pseudonym “Publius”

The Appearance of the Federalist Papers in New York is one of the most significant American contributions to the field of political philosophy and theory and is still widely considered to be the most authoritative source for determining the original intent of the framers of the US Constitution today.

6. November 11, 1620: The Mayflower Compact

The reason why I think the Mayflower Compact is important is because it stood as the foundation for the two most important documents in our history which are the U.S. Constitution and the Declaration of Independence which stated that governments receive their powers from the consent of those they are governing. This helped to establish the direct election of representatives in the colonies and this eventually carried onto the new nation that formed. 

7. June 8, 1789: The Bill of Rights is proposed by James Madison in the US House of Representatives 

The proposition of the Bill of Rights by James Madison to the US house of Representatives is a significant part of U.S. history because it is the first 10 amendments to the United States Constitution. These amendments guarantee essential rights and civil liberties, such as the right to free speech and the right to bear arms, as well as reserving rights to the people and the states.

8. 1803: Marbury v. Madison Court Case

The court case of Marbury v. Madison is an important part in the History of the United States because it established the principle of judicial review which means that courts will have the power to put down the statues, laws, and certain government actions that they find to violate the U.S. Constitution. The judicial decision that was set by this court case still operates in our government today and has great influence over other decisions in court that involve judicial review.

9. January 31, 1865: Thirteenth Amendment goes into effect:

The ratification of the Thirteenth Amendment is a significant event in U.S. history because it marked the moment where we would no longer have slavery in the United States. The reason why this is so monumental is because even though it abolished slavery, it di not end the discrimination. This amendment helped to spark the long-term goal of achieving equality for all Americans and the Civil Rights movement 

10. July 9, 1868: The ratification of the Fourteenth Amendment to the Constitution:

The Ratification of the Fourteenth Amendment to the Constitution is a significant piece of U.S. history as it granted citizenship to all persons born or naturalized in the United States and the Due Process Clause within the Amendment declared that states may not deny any person life, liberty or property, without due process of law.

11. 1954 – 1968: The Civil Rights Movement: 

The Civil Rights Movement is an important time period in United States History because of the sheer amount of impact that the movement had on us today. This was one of the greatest achievements in our history which really exposed the issue with racial discrimination and police brutality. Ever since the thirteenth amendment was ratified, African Americans have still seen the backlash from white supremacists and racists in the South during the time period and with historical figures like Martin Luther King Jr., Rosa Parks, and Thurgood Marshall; they were able to gather African American community and others together to support the cause against racial discrimination and equality among the ethnic groups here in the U.S. The movement helped to bring fairness to the workplace and schools among the African American minorities in major white populations. Other movements that have been heavily influenced by Civil Rights is the movement of gays and lesbians, women, Native Americans, and individuals with disabilities who pushed for their own inclusion and equality in American society. 

12. September 11, 2001: The September 11 Attacks (a.k.a 9/11)

The attack on 9/11 is a significant event in U.S. history because It was the deadliest terrorist attack on U.S. soil in which  nearly 3,000 people were killed. The attacks involved the hijacking of four planes, three of which were used to strike significant U.S. sites. This event had shocked the nation and this led the U.S. government to alter foreign policy and other aspects regarding national security as well. 

13. December 2, 1823: Monroe Doctrine:

The Monroe Doctrine address to Congress by former President James Monroe is an important event in United States history because it became a mainstay of U.S. foreign policy. In 1823 U.S. President James Monroe proclaimed the U.S. protector of the Western Hemisphere by forbidding European powers from colonizing additional territories in the Americas.

14. April 30, 1803: The Louisiana Purchase:

The Louisiana Purchase is an important event in U.S. History because the amount of land that was purchased and what it had to offer. This purchase doubled the size of the United States and along with this, the purchase bought a powerful impetus for westward expansion and confirmed the doctrine of implied powers of the federal Constitution. Today, we have been influenced by this because it brought an abundance of gold, silver, and other ores, as well as large forests and lots of space for farming. This acquisition was extremely beneficial to the United States and it has large contributions to the country’ wealth.

15. 1857: Dred Scott v. Sandford:

The Dred Scott decision is a significant part in U.S. History because of how it effected slavery in the United States and was the most relevant slavery related issue. In what it did to influence the United States, it was decided that free blacks in the North could never be considered as a U.S. citizens, the ban of slavery in the area of the Louisiana purchase was unconstitutional, and Congress nor territorial governments could not ban slavery. The inadequate fairness of the court decision polarized the American public on the question of slavery and this influenced the start of the Civil war and Southern secession. 

16. April 12, 1861 – April 9, 1865: The American Civil War:

The American Civil war or rather the result of the Civil war is an important part in the U.S. History because the victory of the North was preserved the U.S. as a country and ended the establishment of slavery that had divided the country before that point. If the North had not won this war, then the U.S. would look very different today. Today, the North and Southern states (near the East coast) are still apart of one unified country, rather than two countries with drastically different views about racial issues (such as slavery during the time of the civil war). 

17. July 1, 1863 – July 3, 1863: The Battle of Gettysburg

The Battle of Gettysburg is a significant time in American history because it was one of the deadliest battles to the U.S. and provided an outcome that would give the Northern states the morale boost they needed to put an end to confederate states and their plan to invade the North.

18. November 19, 1863: Gettysburg address by Abraham Lincoln:

The Gettysburg Address given by President Abraham Lincoln is a significant part of United States history because it invoked the principles of human equality contained in the Declaration of Independence and connected the sacrifices of the Civil War with the desire for “a new birth of freedom,” as well as the all-important preservation of the Union created in 1776 and its ideal of self-government.

19. April 13, 1896 – May 18, 1896: Plessy v. Ferguson case:

The court case of Plessy v. Ferguson played an important role in U.S. history because it established the constitutionality of racial segregation. For more than half a century, this ruling in the court case as a controlling legal precedent, prevented constitutional challenges to racial segregation. Until the court case of Brown v. The Board of Education where this case was overturned, African Americans and other Ethinic minorities had to be “separate but equal” to whites. The racial segregation laws that were put in place for public spaces were catalysts to racial segregation in the United States, especially in the South. Today, our society has been affected by the court ruling by helping to influence the reasons behind the civil rights movement and influence the people enough to want change in racial discrimination and injustice. 

20. December 9, 1803: Ratification of the Twelfth Amendment of the United States:

The ratification of the Twelfth Amendment in 1803 plays a significant part of American history because it allows smaller states to have equal influence in the Electoral College. Without the Twelfth Amendment, larger states had easily overwhelmed the smaller states today.

23. 1918 – 1920: Spanish Flu Worldwide influenza epidemic strikes:

The Spanish Flu is a significant part of United States history because of the large impact it had on the world population as it killed more than 5 million people worldwide. Unlike most other flu strains, this one was the most significant as it was particularly deadly in young adults aging from 20 to 40 years old which meant that many children during this time lost one or both of their parents. 

24. August 18, 1920: The Nineteenth Amendment is ratified:

The 19th Amendment to the Constitution is a significant part of U.S. history because it guaranteed that women throughout the United States would have the right to vote on equal terms with men. As a result of this Amendment, millions of American women have had the opportunity of voting in U.S. elections.

25. May 31, 1790 US copyright law enacted (Top 30)

The enactment of the US copyright law is an important event in American history because it produces exclusive rights to authors for a limited period of time as well as promote creativity and learning which still has its effects in today’s society. 

26. September 17, 1849 – 1860: Harriet Tubman escapes slavery and makes 19 trips to lead slaves to freedom

Harriet Tubman’s escape and journey in leading slaves to their freedom through what was known as the “Underground Railroad” is a significant piece of United States history because she had demonstrated one of the most courageous and most dangerous feats in our history and played an important role on the Union side of the American Civil War.

27. January 23, 1964:  The Twenty-Fourth Amendment is ratified:

 The Ratification of the twenty-fourth Amendment outlawed the poll tax that before this time was required for voting in Federal elections. The reason why getting rid of the poll tax is so important was because the tax represented Jim Crow Laws and it developed in the post-Reconstruction in the South which had aimed to disenfranchise black voters and support segregation.

28. 1971: Invention of the Email:

  The invention of the Email has shown significant value in American history because it has revolutionized the way people communicate with one another. In business, the Email is cheap, fast, accessible, and easily replicated which has greatly benefited businesses and people so they can transmit any kind of electronic data to others. 

29. 1989: The internet is invented:

The invention of the internet is an important time in U.S. History because it opened the door for everyday people to attain information, communicate with others, and perform thousands of activities. The internet has revolutionized areas such as delivery services, shopping, business, and countless other categories. Without the internet, things that we commonly have available today might not be as attainable. 

30. March 3, 1791: Congress establishes US Mint

The establishment of the US Mint is an important piece of history in the United States because it serves the American people by manufacturing and distributing circulating, precious metal and collectible coins and national medals, and providing security over assets entrusted to us.

31. May 17, 1792: The establishment of the U.S. Stock Market: 

The establishment of the U.S. Stock Market is an important part of our country’s history because It allows companies to raise money by offering stock shares and corporate bonds. This market also allows common investors to participate in the financial achievements of the companies, make profits through capital gains, and earn money through dividends which is still in effect today. 

32. August 1929 – March 1933: The Great Depression 

he Great Depression of 1929 to 1933 was an important period in U.S. History because it devastated the United States economy. The U.S. saw a large rise in unemployment and homelessness, as well as a decrease in housing/real estate values, deflation went over 10%, and international trade collapsed by 65%. Along with the Wall street crash of 1929, the Great Depression made way for more government intervention in the market and as a result, so far we have not seen a stock market crash as devastating as the 1929 crash or such a depression in the economy. 

33. October 24, 1929 – November 13, 1929: The Wall Street crash of 1929:

The Wall Street crash (a.k.a. The stock market crash of 1929) is an important time in United States History because of how devastating its effects were on the confidence in the American economy. The crash resulted in sharp reduction in spending and investments during the time which led to banking panics in the early 1930s, causing a large sum of banks to fail and limit the amount of money available for loans. Today as a result of this wall street crash, America has expanded government intervention in economic and social affairs and has led to the creation of much more financial or social assistance agencies.

34. September 1, 1939 – September 2, 1945: The U.S. Involvement in World War II 

 I think that the The U.S. Involvement in World War II since 1941 is a significant time in our Nation’s History for a number of reasons. One of those reasons is that it helped the U.S. economy recover after the Great Depression by decreasing unemployment and the massive war spending doubled economic growth rates. Another reason why our involvement with World War II is so important to our history  is because without the involvement of the U.S. Armed forces, the Allies may not have won and Europe could look a lot different as before the bombing of Pearl Harbor  and so would the U.S. economy at the time as well. In regards to the civil rights side of things, the war was witness to the greatest violation of civil rights in the history of the United states in regards to the Japanese internment camps which imprisoned 120,000 Japanese Americans living in Pacific Coast states. Lastly, the war led to a defining moment in our history when The United States showed their true dominance as a world power through the first real and successful use of the atomic bombs in war.

35. August 6, 1945 – August 9, 1945: The Atomic Bombings of Hiroshima and Nagasaki, Japan:

The U.S. Atomic bombings of Hiroshima and Nagasaki, Japan is an important event in our history because this marked the first time a nuclear weapon has ever been used in a war conflict. The uses of these atomic bombs helped to lead World War II to a quick ending and it saved many lives of American soldiers. Today, the U.S. is still the only country to ever use an atomic bomb in a war and has continued to show that they are the world’s greatest superpower.

36. April 30, 1789: George Washington becomes the First President of the United States

The day when George Washington became the first President of the United States is an important event in our country’s history because he stands as the father of our country and set the standard for which other presidents are to be elected. During his presidency he set important precedents for the social life of the president, he signed the first copyright law into law, he led troops to stop the Whisky rebellion, and many more things. 

37. March 4, 1861 – April 15, 1865: The presidency and assasination of the 16th president of the United States: Abraham Lincoln

The assasination of President Abraham Lincoln is an important event in U.S. History because of how he dramatically changed the Reconstruction era. After his death, Vice President Johnson took his place and he took the re-integration of the Southern states back into the union with much leniency. This leniency led to the establishment of state governments which sided with black codes which restricted the rights of African Americans in the South.

38. January 20, 1961 – November 22, 1963: The Presidency and Assasination of President John F. Kennedy in Dallas, Texas:

The Presidency and assasination of President John F. Kennedy is an important time in U. S. History because he helped usher in the era of Civil Rights. Before the death of Kennedy, he had proposed legislation for civil rights and this would outlaw discrimination which was based off the religion, sex, race, or national origin. In regards to the other things he contributed to the nation; Kennedy presided over the establishment of the Peace Corps, Alliance for Progress with Latin America, and the continuation of the Apollo space program with the goal of landing a man on the Moon.

39. May 14, 1804 – Sep 23, 1806: The Lewis and Clark Expedition:

The Lewis and Clark expedition is an important time in U.S. History because the findings contributed much geographic and scientific knowledge of the West, helped the expansion of the fur trade, and strengthened the U.S.’ claims to the Pacific. The maps that Clark produced after the expedition were the best available as to the geography of the west until around the year 1840. 

40. July 28, 1914 – November 11, 1918: World War I

The United States’ involvement in World War I is a very important event in the history of the United States because it forced the United States to become a World power. After the outcome of the war, the United States had become a world leader in trade, economics, and industry. 

41. December 17, 1903: The First Successful Airplane and flight by the Wright Brothers:

The first successful flight of the Airplane by the Wright Brothers is a significant event in U.S. history because of the influence it had on American transportation and war. During World War II, Airplanes were heavily used for the transportation of goods and as well as offensive uses. Today, we still use Airplanes in our country for military and passenger purposes.

42. 1793: Eli Whitney invents cotton gin

The invention of the cotton gin is an most important part in U.S. history because of the impact that it had on the agricultural industry during the time and how it made way for many improvements in technological innovation when it comes to agriculture. 

43. 1824: The Creation of the American System by Henry Clay:

The introduction of the American System is an important part of United States History because the plan helped to strengthen the U.S. economy through high tariffs, reinstitution of a National bank, and expansion and improvement of Infrastructure of the Nation. From the American system, the Second bank of the United States was formed and it shaped national economic policy during the 19th century which has lasting impact as we benefit from it today.

44. 1809: Nonintercourse Act

The Nonintercourse act is and significant piece of U.S. history because it played a significant role in the birth of American industrialization. The way this act invoked this was through its rejection of manufactured goods from France and Britain which forced the United States to produce its own items and this act also led to the War of 1812. 

45. 1760 -1840: The Industrial Revolution:

he Industrial Revolution is an important periods in United States history because it transformed our economy which had been based on agriculture and specific crafts to evolve into the economy being based on large-scale industry, the factory system, and mechanized manufacturing. During this time period, new machines, new power sources, and new ways of work organization in existing industries became more efficient and productive. 

46. 1830: Samuel Morse Introduces Morse Code:

The introduction of Morse Code is the #49 most important piece of the U.S. History because it opened the ability for ships to communicate at sea over long distances with the use of large lights. Later on, during World War II, Morse code was especially helpful to the U.S. in it’s partnership with the telegraph (in 1844)which improved the speed of communication. Today, Morse code still remains popular, especially with amateur radio operators all over the world. 

47. May 24, 1844: Invention of the Electric Telegraph

The invention of the Electric telegraph is a significant piece in the U.S. History because it allowed for the language of Morse Code that was originally used among sailors to have a more practical use. Even though Morse code is not used as much as it was in the early and mid 1900s, it was a landmark for one of the first communication devices over the air. 

48. April 21, 1898 – December 10, 1898: The Spanish American War

The Spanish American War is an important part of U.S. History because the result ended Spain’s colonial empire in the Western Hemisphere which allowed the United States to have control over the Pacific. Also as a result, Spain gave away all claims from Cuba, they ceded Guam and Puerto Rico to the U.S., and they gave their sovereignty over the Philippines to the United States for $20 million. 

49. 1793: Fugitive Slave Act passed

The Fugitive Slave act is a significant part of United States history because (as part of the Compromise of 1850) it required that slaves be returned to the owners despite the fact if the slave were to be in a free state. This act was one of the worst acts to be passed by Congress during this time concerning the freedom of African American slaves. 

50. 1908: Henry Ford invents the Model T:

The invention of the Ford Model T is an important piece in the United States’ history because it revolutionized the way Americans travel, work, and live. The model T was intended to be the first car to be affordable/attainable for most Americans. The invention of the Model T also introduced the idea of the assembly line, which was a much more efficient process than had previously been used for automobile manufacturers in the past. With this new Idea, many manufacturers (not just for cars) began to integrate this into their production lines which ultimately led to a much faster production rate.

51. October 27, 1838: Mormon Extermination order:

The Mormon Extermination Order one of the most important pieces in U.S. History because this stands as the first time that a religious group has been sought after for extermination in the United States solely because of a general disliking for their belief sets and way of life. 

52. September 18, 1947: United States Air Force Is established (USAF): 

The establishment of the United States Air Force is an important piece in U.S. History because it is one of the major components of the United States armed forces. The significant responsibilities that the Air Force has are concerning air warfare, air defense, and the development of military space research.

53. May 26, 1972 – June 1979 : U.S. and Soviet Union sign strategic arms control agreement known as SALT I and SALT II:

The SALT I and II agreements are among the most significant events in history because they established  an agreement between the Soviet Union and the U.S. to restrict the manufacture of strategic missiles that are capable of carrying nuclear weapons and it established numerical equality in terms of nuclear weapons delivery systems.

54. 1944: Korematsu v. United States:

The Korematsu v. United States court case is and important piece in U.S. History because it is the only case in the Supreme court history in which the Court, using a much less strict test for potential racial discrimination, upheld a restriction on civil liberties. Essentially, a son of a Japanese immigrant who was born in Oakland, California was convicted of violating the Japanese exclusion order that required him to be forced to relocate in World War II. 

55. December 5, 1955 – December 20, 1956: The Montgomery Bus Boycott:

The Montgomery Bus Boycott is among the most important pieces of U.S. History because it was a major event within the Civil Rights movement that showed the changing of laws regarding the protection of the equal rights of all U.S. citizens despite race through a peaceful protest. Before the protests in 1955, segregation was very common in the South; this part of our history helped to change it. Today, the Montgomery Bus Boycott stands as inspiration to everyone to stand up for the right thing.

56. November 1, 1955 – April 30, 1975: The Vietnam War:

 The Vietnam War is one of the most significant parts of U.S. History because it was the largest war of many that the U.S. should not have been involved in and this cost many lives of Americans and the Vietnamese. For the duration of the war, Americans on the Homefront protested against the war for a number of reasons. Many of these reasons had to do with their general opposition to the violence and lack of clear objectives of the war. American civilians did not know why their country was fighting in that war and they did not know if it was winnable. Today, Vietnam stands as one of the deadliest wars in the U.S. History and it has taught many lessons from clarifying goals to the policy of containment.

57. February 1, 1960: Sit-in Campaign:

The Sit-in Campaign is an important event in the U.S. History because it showed the most successful results in regards to desegregation in the Southern States. The sit-in Campaign was another sign of the mass nonviolent protest/action towards bringing the national media to the attention of the Civil Rights movement. Where desegregation was the most successful was in Arkansas, Maryland, North Carolina, and Tennessee following not too long after the campaign.

58. August 6, 1965: President Johnson signs the Voting Rights Act

When the Voting Rights Act became effective; this is one of the most important events in U.S. History because it outlawed discriminatory voting practices in most Southern States. This act helped to further enforce the 15th amendment in the Constitution. The Civil Rights movement benefited highly from this act, as one of its major goals was to register African American voters across the South. 

59. 1876–1877: The Invention of the telephone by Alexander Graham Bell:

I believe that the Invention of the telephone is an important part of U.S. history because it has revolutionized communication as we know it today. Expanding upon the invention of the invention of the electric telegraph, the telephone allowed for much easier communication and is currently one of the fastest ways to contact others. 

60. March 10, 1876: Introduction of the Home Phone (or landline): 

The introduction of the home phone is a significant piece of United States history as they play an important role in telecommunications. With this invention has also led to the invention of mobile phones which are an integral part of our lives today. 

61. 2000s: The introduction of mobile phones

The introduction of mobile phones is among the important times in U.S History because this technology has allowed people to communicate over long distances from almost anywhere in the country/world which has changed the way we live in a substantial way. Before mobile phones had been integrated into our society, landlines and payphones were the prime tool for communicating with other people. The problem that mobile phones fixed was the “mobility” problem of phones. With the creation of infrastructure (cellular towers) along with mobile phones; this allowed people to have the convenience of being able to contact whomever they pleased (with a phone) all while going through their daily routine at whichever location they were at that had cellular service.

62. June 1, 1789: 1st US congressional act becomes law (on administering oaths): The Oath Act

The Oath act is a significant piece of history in the United States as it was the first law passed by the United States Congress after the ratification of the U.S. Constitution. It was signed by President George Washington on June 1, 1789, and parts of it remain in effect to this day.

63. July 13, 1787: Congress establishes Northwest Territory Ordinance

The establishment of the Northwest Territory Ordinance by U.S. Congress is a significant part of our country’s history because it established a government for the Northwest Territory, outlined the process for admitting a new state to the Union, and guaranteed that newly created states would be equal to the original thirteen states.

64. June 13, 1966: Miranda v. Arizona:

The Miranda v. Arizona court case decision is a significant part of U.S. History because it ruled that a defendant’s statements to authorities are inadmissible in court unless they have been told of their right to have an attorney present during the questioning and that anything that they say will be held against them. Today, this has a significant impact on Law enforcement and usually during the detainment of a criminal/suspect, a Law Enforcement official will inform the individual of their Miranda Rights. The line the officer must say is: “You have the right to remain silent and refuse to answer questions. Anything you say may be used against you in a court of law. You have the right to consult an attorney before speaking to the police and to have an attorney present during questioning now or in the future.”

65. 1913: The introduction of the Gold Standard:

The introduction of the Gold standard in 1913 is among the most important parts of United States history as it added impactful advantages such as limiting the power of governments and banks, providing stability to the paper currency. The gold standard was a large part of why the U.S. had been able to retain much of its dollar value until 1971 when Nixon switched the standard to the Fiat money supply. 

66. August 15, 1971: Nixon announced the switch from Gold standard:

The effective date of the switch from the Gold standard is an important time in history because this changed the money supply in the U.S. Before this switch, the Gold standard in the U.S. meant that our money supply would be determined by the gold supply. This was important because it limited the power of governments or banks to cause price inflation through too much paper currency and it created a solid foundation in international trade through providing a fixed pattern of exchange rates. Now, our country runs off of the fiat money supply which gives central banks more control over the economy and introduced the concept that if too much money were to be printed, then this can result in hyperinflation. 

67. January 22, 1973: Roe v. Wade:

The Roe v. Wade court decision is an important part of the United States’ history because this was the first that a court acknowledged that the constitutional right to privacy is comprehensive enough to allow for a woman to decide whether or not to have an abortion. As a result of this decision, our society has seen a large number of terminated pregnancies every year.

68. 1969: Brandenburg v. Ohio:

The Brandenburg v. Ohio court case is an important piece of United States history because the decision established that speech advocating illegal activities is protected under the 1st Amendment but if the speech is likely to incite “imminent lawless action”, then it is not protected.

69. 1961: Mapp v. Ohio:

The Mapp v. Ohio court decision is among the most important events in U.S. history because it helped to strengthen people’s Fourth Amendment rights which guards against unreasonable searches and seizures. This case made it illegal for evidence obtained without a warrant to be used in a trial for a criminal in state court. Today, all criminal court cases are affected by this decision.

70. 1865–1914: The Era of the Robber Barons:

The Era of the Robber Barons is one of the most important time periods in The United States because it changed the lives of Americans forever as it brought complex economic and social changes which led to riots, strikes, and the emergence of unions. The Robber Barons gained much wealth and power as they were able to monopolize essential industries to build large financial empires. A significant impact that Robber Barons had on the U.S. Society was that they connived with politicians in order to get advantages for themselves through controlling the government and the law. 

71. 1824: Gibbons v. Ogden Court Decision:

The Gibbons v. Ogden court case decision is an important piece of U.S. history because this declared Congress’s ability to regulate interstate commerce and decided that state laws have to capitulate to constitutional acts of Congress. The results from this court decision ruling are still effective today. 

72. April 24, 1820: The Land Act of 1820

The Land Act of 1820 is an important piece of U.S. History because it helped the average American and wealthy investors to buy the lower cost of land. This act influenced the creation of a new age of Western growth and influence in the U.S. but as a negative effect, it increased the land removal from the Native Americans. 

The introduction of the 5 standard time zone sin the US and Canada in 1883 is a significant time in U.S. history because it pronounced the solution for the need for a unified time-keeping system as the expansion of transport and communication demanded it. During the time, a standardized time zone would make the time calculations much more simple and would offer a uniform train schedule for departure and arrivals. Today in the U.S., we benefit from standardized time zones as they allow us to know the accurate time whichever zone we are in. 

The introduction of the First Transcontinental Railroad is an important event in history because this allowed the two American coasts to be connected which made the economic transport of Western goods to East coast markets much easier and quicker. The creation of the railroad also led to westward expansion and by 1880, the railroad began transporting over $50 million worth of freight each year following.

The use of the Oregon trail is one of the most significant parts of U.S. history because it helped to change how the United States grew. It helped to move the population westward from the overpopulated East. If it was not for the Oregon Trail, many of the western states would not be or even look like they do today and The trail also helped spread culture and religious beliefs.

The war of 1812 was crucial for the United States and is an important period in United States history  for three reasons: It hindered the Native Indian’s ability to resist American expansion (as they had been abandoned by their British allies), it allowed the U.S. to revise the boundaries they had with Spain and consolidate control over the Gulf of Mexico and the lower Mississippi River, and it eventually unpopularized the Federalist party.

The Battle of Tippecanoe is a significant piece of United States history because it destroyed the hopes of a large Indian Confederacy and ultimately became the catalyst of the War of 1812with causing a strain in the Native Americans’ land. 

The mission of Apollo 8 is among the most significant events in United States history because this was a huge achievement for mankind as it was the first mission to take humans to the Moon and back to Earth. This success helped to establish the United State’s preeminence in space.

The Mission of Apollo 11 is one of the most important events in the U.S. History because this marked the first successful step by humans on another type of planetary body that helped us to learn more about the moon (in concerning its age and element contents) and it helped to promote the U.S. victory in the space race against Russia.

The Cold war is one of the most important part of United States history because it marked a time in history where two world powers were on the brink of nuclear disaster, it shaped American Political ideology and foreign policy, as well as impacting the presidency and domestic economy. In addition to this, the Cold war had impacted the US today by helping Western Europe to escape communism which if the U.S. did not intervene, Russia and China would have conquered Europe.

 The time period in which the U.S. controlled the Panama Canal (until they gave it up) is a significant part of the United States because it allowed U.S. shippers of commercial goods to save much more money and time by transporting cargo much more quickly. Still today, the Panama Canal is still very important for trade between two different oceans.

The Federal Reserve is an important part in the U.S. History because it ensures the safety of the nation’s financial system through regulating banks and other financial institutions. This safety net that the Federal Reserve system has in place also leads to the protection of the credit rights of consumers in the U.S. Today, the Federal Reserve has helped to keep employment high, long-term interest rates in check, and prices stable. 

83. 1896–1916: The Progressive Era

The Progressive Era is an most important piece of U.S. history because it addressed the problems that had been caused by the industrial revolution concerning immigration, urbanization, political corruption, and industrialization. 

84. 1939: The Manhattan Project:

The Manhattan project is one of the most significant part of U.S. history because it triggered the arms race throughout the Cold War as well as influencing other nuclear programs to start such as in France and Great Britain. In regards to peaceful nuclear transformations, the Manhattan project led to the invention of Nuclear power.

The 21st amendment is the an important piece of U.S. history because it invalidated the 18th amendment which had previously banned the sale and manufacturing of alcohol. As a result of this amendment, the era of prohibition had ended and has made a significant impact on American society as Alcoholic beverages are an integral part of American culture.

86. July 16, 1945: First Successful Atomic Bomb

The First successful Atomic bomb tested in Algormordo, New Mexico is the an important event in U.S. History because this confirmed that this technology could be applied in war and in August of that same year, the U.S. dropped two atomic bombs on Hiroshima and Nagasaki which killed thousands of people.

87. December 2007 – June 2009: The Great Recession:

The Great recession of 2007 to 2009 is among the most important time in United States history as it has had one of the most harsh impacts that we have seen in our country. In the U.S., recovery was very slow and uneven and the broader social consequences included lower infertility rates, high levels of student debt, and diminished job prospects among younger adults. 

The 2008 Housing crisis is a significant part of American history because it was another major impactful outcome of the Great Recession as banks extended credit to people who did not qualify and this drove housing prices to levels that many could not afford as well as increased home mortgage foreclosures.

89. December 20, 1951: The invention of Nuclear power in Idaho

The invention of Nuclear power is one of the most important parts (or advancement) in U.S. history because they have had such a significant impact not just on the U.S. but the whole world when it comes to energy needs. Today, Nuclear energy provides for 52% of America’s carbon-free electricity  and they provide several advantages such as no greenhouse gasses, reliability, low-costs, and high-energy density.

90. 1862 – The Homestead Act:

The Homestead Act of 1862 is a significant and enduring event in the westward expansion of the United States as it granted 160 acres of free land to claimants, it allowed nearly any man or woman a chance to have their own farmland and contribute to the growing U.S. economy. 

91. May 28, 1830: President Jackson signs the Indian Removal Act

The Indian removal act signed on 1830 is one of the most significant parts of United States history because It gave the president power to negotiate removal treaties with Indian tribes living east of the Mississippi. Under these treaties, the Indians were to give up their lands east of the Mississippi in exchange for lands to the west.

92. May 7, 1915: Sinking of the Luisitania: 

The sinking of the Luisitania is among the most significant parts of United States history because it led to the death of many innocent civilians in the hands of the Germans which led to American support for its allies involved in the war.

93. February 20, 1792: U.S. March 21, 1924: Introduction of the Mutual fund: 

The introduction of the Mutual Fund in 1792 is a most piece of U.S. history because it is a cost effective way to diversify an investment portfolio and it is utilized by millions of American still to this day. 

94. 1935: The creation of Treasury bonds:

The creation of Treasury bonds is a significant part of United States history because they are backed by the U.S. government, Treasury securities are seen as a safer investment relative to stocks and are utilized by millions of American today.

95. July 26, 1775: US postal service created: 

The creation of the US Postal Service is one of the most significant pieces of United States history because it provides for an essential service. Ever since its establishment, The USPS  has handled the distribution of mail and packages from a hub to the local doorsteps of millions of people every day.

96. 1879: The Invention of the Incandescent Light Bulb by Thomas Edison:

The Invention of the Incandescent lightbulb is an important event in United States history because it helped to establish a new social order as it extended workdays into the nighttime, allowing us to navigate and travel safely while in the dark. Without this invention, Further improvements would not have happened which further enable us to have light in dark situations. 

97. 1809: Humphry Davy Creates the First Arc Lamp

The invention of the first arc lamp is an important part of history in the United States as it provided for the lighting source needs (when it came to street lights, Early film production lighting, lighthouses, etc.). Today, the arc lamp is only used in niche applications such as cinema projection, follow spots and searchlights but this invention gave way to integration of electric based light sources in our modern society.

98. 1962: The Invention of the LED

The Invention of the LED plays an impactful role in United States history because it was a significant improvement over the incandescent light bulb counterparts as it used 80% less energy and lasts 225 times longer. Today, LEDs are a major component of modern American homes and devices. 

99. 1934: NFA (National Firearms Act):

 The National Firearms Act is a important piece of U.S. history because it began the taxation of importers, manufacturers and dealers on machine guns and certain firearms. Furthermore, this act was made to also restrict importation and to regulate interstate transportation of firearms.

100. June 17, 1972: The Watergate Scandal: 

The Watergate scandal is an important event in history because it exhibited the illegal activities that had been done by the Nixon administration and this led to a decrease in the faith of the people in the government and as a result, the reputation of the presidency was damaged and today, the suffix “-gate” from Watergate had become a term that people today use when they are referring to a scandalous activities.

101. 1849 – 1920: Women’s Suffrage movement:

The Women’ Suffrage Movement is an important time period in U.S. History because it resulted in the 19th Amendment which gave women the right to vote and this time period also increased women’s roles in the economy and more educational opportunities so women could lead more meaningful professional careers.

102. December 30, 1853: The Gadsden Purchase

The Gadsden Purchase is one of the most important events in U.S History because it gave the land that was needed for a Southern Transcontinental Railroad and has given the land that is currently the states of New Mexico and Arizona which were rich in cotton, copper, and cattle.

103. February 28, 1854: The Republican Party is founded in Ripon, Wisconsin 

The founding of the Republican Party is an important piece of U.S. History because it is one of the two major contemporary political parties in the U.S. and it is the main promoter to free market capitalism, lower taxes, deregulation of corporations, and restrictions on labor unions.

104. March 8, 1881 – January 12, 1883: The Second transcontinental railroad connection is finished

The Completion of the Second Transcontinental Railroad is an significant part of U.S. History because it helped to link lower states that were farther from the First transcontinental railroad together which allowed for better transportation of goods between states.

105. 1899: Albert T. Marshall, an American inventor, patented the first mechanical refrigerator

The invention of the first mechanical refrigerator by Albert T. Marshall is one of the most important event in United States history as for the first time, it allowed Americans to be able to store food for longer periods of time and with further improvements (with domestic refrigerator units) in the 1920s, American homes have been changed forever in how they preserve their food. 

106. December 6, 1946: The invention of the Microwave oven by Percy Spencer 1882 – 1943: Chinese Exclusion Act

The Chinese Exclusion act is an important event in United States history because it was the first significant law restricting immigration in the U.S. and it was attributed to declining wages and economic weaknesses for Chinese Workers. This act represented the outcome of years of racial hostility and anti-immigrant agitation by white Americans.

107. January 31, 1958: Explorer I, first American satellite, is launched

The launching of Explorer I is among the most important events in U.S. history because it marks the beginning of the U.S. Space Age and has helped American scientists during the time to understand the radiation environment in Earth orbit. Today, American satellites have made many more improvements from this Satellite which allows us to gather more data from space. 

108. April 4, 1968: The Assasination of Martin Luther King Jr.

The assasination of MLK is a significant event in United States history because it led to more action (on behalf of him) in the Civil Rights movement. This national mourning and public outrage in the African American community helped to pave the way for an equal housing bill which would be the last significant legislative achievement for the Civil Rights movement.

109. April 26, 2009: Swine Flu: The U.S. declares the outbreak a public health emergency

 The introduction of the Swine flu in the U.S. is among the most significant parts of the United States’ history because it affected many people in American society negatively as well  as the stock markets, tourism, food, and transportation industries as the lack of public confidence declined.

110. 1927: Philo Taylor Farnsworth invented the TV in Idaho:

I think that the invention of the TV in 1927 is a significant piece of U.S. history because It is a powerful tool to educate and entertain its viewers across the world. Nowadays, Television is considered as the main source of information for people, because it enables us to receive the latest news from all over the world.

 111. January 16, 1919: Eighteenth Amendment to the Constitution is ratified:

he ratification of the 18th amendment is an important event in United States history because this restricted the sale, manufacturing, or transportation of Liquor within the U.S. This amendment led to a decline in the consumption of alcohol but many still consumed, transported and produced alcohol illegally. Later in 1933, this amendment would be repealed which would mark the first and only time (as of 2021)  in which an amendment would be repealed from the Constitution.

112. May 21, 1932: Amelia Earhart completes a solo nonstop transatlantic flight 

The non-stop solo transatlantic flight conducted by Amelia Earhart is an important event in U.S. history because this marked the first time a woman has ever conducted this type of flight which also makes her the second person in the world to do it as well. Amelia Earhart has set many world records for women and stands as an inspiration today. 

113. 1964: New York Times Co. v. Sullivan:

The court decision of New York Times Co. v. Sullivan is a significant event in U.S. history because it protected the press and the public’s right to criticize public officials in the conduct of their duties. As a right, this is one of the most extraordinary and it is particularly valuable in times of polarization and political controversy today.

114. 1967: Loving v. Virginia:

The Loving v. Virginia court case decision is among the most significant events in U.S. history because it declared the anti-interracial marriage law unconstitutional and this led to a a significant hit on segregation in the South.

115. February 4 1860: Secessionist states establish the Confederate States of America

The establishment of the Confederate States in the US is an important part of American history because it caused a major divide within the country and without the positive outcome (for the union) in the war, the Confederate states would have stemmed off into a different country.

116. 1867 – Tenure of Office Act enacted:

The Tenure of Office act is an important part of American history because it helped to restrict the power of the president to remove certain office-holders without Senate approval. Today this act is especially important as it helps to maintain balance between the three branches of the U.S. government.

117. August 21, 1996: Introduction of HIPPA:

The Introduction of HIPPA in 1996 is an most important event in the history of the United States because it protects individuals and to ensure everyone has full access to a copy of their personal medical records. Additionally, it is ultimately a civil rights issue and it mandates data protection for anyone who creates, stores, transmits or uses individually identifiable health information.

118. 1965: Chicago Freedom Movement:

The Chicago Freedom movement in 1965 is an important event in U.S. history as it was one of the major forces which helped to bring the Fair housing act of 1968 into legislation during the Civil Rights movement: 

119. 1968:The Fair Housing Act passes

The Fair Housing Act of 1968 is part of the most important pieces of U.S. history because  it expanded on pervious acts and restricted discriminations from being affiliated with the sale of rentals and financing of housing in concern to religion, race, national origin, or sex.

120. March 26 1830: Book Of Mormon Is Published: 

The publishing of the Book of Mormon is a significant event in the history of the United States because this book is the foundation of one of the fastest growing of the world’s religions with more than 7 million members in the U.S. alone.

121. 1995: Introduction of VoIP:

The introduction of VoIP is the a significant part of American history because it was a big advantage over traditional phone systems as it offers multi-calling capabilities. Large businesses and organizations usually need a separate conference call provider but VoIP includes this as it is built right into their service. Today, along with advancements in technology and VoIP, businesses and organizations can communicate without an actual telephone service. 

122. January 21, 2020: CDC Confirms First US Coronavirus Case

The start of the COVID-19 pandemic in the U.S. is a significant event in our history because of its devastating effects on our country. The pandemic has affected job markets, the economy, and the way Americans socially interact and as a result of this, our society has fundamentally changed forever.

123. June 7, 1965: Griswold v. Connecticut:

The Griswold v. Connecticut court case decision is a significant event in American history because it ruled that married couples had the right to use contraception and this essentially paved the road for reproductive freedoms and privacy that are in place today.

124. 1973: Creation of (and First use) of GMOs (Genetically Modified Organisms):

The creation of GMOs in the U.S. is a significant part of American history because it  has benefited agriculture through increased crop yields, reduced costs for Food or drug production, reduced the need for pesticides, enhanced nutrient composition and food quality, and greater food security. 

125. 1973: The creation of the GPS (Global Positioning System)

The creation of GPS plays as an important piece of American history because it became a major technological advancement which allowed our government to be able to monitor object or personal movement and have fine accuracy with determining Location and Navigation. With the opening of GPS for civilian use, it has revolutionized the way we live, and it has enabled Americans to be able to Navigate through the U.S. as well as in other countries too. 

126. May 30, 1854: The Kansas-Nebraska Act: 

The Kansas Nebraska act is a significant piece of American history as it was a major catalyst in sending the nation into the Civil War. The act has reversed the Missouri Compromise and allowed the practice of slavery in the original areas of the Louisiana Purchase.

127. March 3, 1820: The Missouri Compromise:

The Missouri Compromise of 1820 is a significant piece of United States history as it was meant to keep a balance between the number of slave states and the number of free states in the Union. It allowed Missouri to enter as a slave state at the same time Maine entered as a free state, thus maintaining a balance in numbers of free and slave states.

128. 1990: Employment Division v. Smith:

The court case ruling of Employment Division v. Smith is among the most important events in American history because it changed religious free exercise law with ruling that generally applicable laws not targeting certain religious practices do not violate the First Amendment. In addition to this, It marked the beginning of the prolonged sectional conflict over the extension of slavery that led to the American Civil War.

129. 1991: The end of the Cold War against Russia:

The end of the Cold War is an important time in U.S. history because it marked the end of a conflict which could have been detrimental to the United States, Russia, and the world if it turned into a real war. After the end of the Cold war, the U.S. also benefited from reduced trade barriers and it was believed to have promoted economic growth at home and abroad, as well as stabilized the U.S. and allies.

130. July 26, 1908: Bureau of Investigation, (before it was renamed to the Federal Bureau of Investigation (FBI)), is established

The establishment of the FBI is an important piece in the U.S. History because of what the organization does for our nation. The goal or mission of the FBI is to defend and protect the U.S. against things like terrorist attacks and foreign intelligence threats, to enforce criminal laws, and to give criminal justice services and leadership to state, federal, international, and municipal agencies. Today, we still have the FBI in place and they perform a number of things in order to protect the nation

131. 1992: Planned Parenthood v. Casey:

 The court case ruling of Planned Parenthood v. Casey is an important part of U.S. history because it established that restrictions on abortions are unconstitutional only if they place an “undue burden” in a woman who wants an abortion before the fetus is operational outside the womb.

132. April 19, 1993: Waco Siege

The Waco Siege is an important event on this list because it was one of the most tragic incidents in American religious history which could have been lessened if not avoided if the FBI took the appropriate measures. 

133. 2007: Amazon opens its first distribution center:

The start of Amazon co. is an important event in American history because it has revolutionized the way we live as ordering things online deems more viable for most people rather than retail stores. Today, Amazon has become one of the most powerful, respected, and feared companies in technology and beyond.

134. January 24, 1984: The First Mac: The first Macintosh was introduced

The first Macintosh is an important part of U.S. history because it has such a significant impact on the personal computer world as it was the first to feature the mouse and a graphical interface; starting a revolution in this space. Today, our computers have very similar features to the first Mac with thousands of major improvements by Apple and other companies as well that expanded upon this idea.

135. 1994: Federal Assault Weapons Ban: 

The federal assault weapons ban in 1994 is an most important part of U.S. history because it is one of the major bans on guns that has restricted civilian’s right to own certain guns that had been granted to them by the second amendment. This is one of the many bans/restrictions on civilian use of firearms in the U.S.

136. 1990: Employment Division v. Smith:

The court case ruling in Employment Division v. Smith is among the most important events in U.S. history as it held that any state could deny unemployment benefits to an individual who was fired for breaking a state prohibition law on the use of peyote. This law even applied to drugs that were used for religious ceremonies.

137. 1991: Payne v. Tennessee

The court case ruling in Payne v. Tennessee is an important event in American history because it held that testimony in the form of a victim impact statement is admissible during the sentencing phase of the trial. This has had a significant, ongoing impact in victim’s rights, criminology, stare decisis, and the lives of the parties involved. The case allowed victim impact statements in U.S. courts, and the overwhelming majority of states now allow such use in the sentencing phase of trials, and was a significant development in the victims’ rights movement.

138. January 24, 1848: Gold is discovered at Sutter’s Mill in California.

The Discovery of Gold at Sutter’s Mill in California is one of the most significant events in the United States history because it created a lasting impact by propelling significant industrial and agricultural development and helped shape the course of California’s development by spurring its economic growth and facilitating its transition to statehood.

139. January 16 – February 28, 1991: Persian Gulf War:

The Persian gulf war is a significant piece of U.S. history because of its effect on our economy in a positive way but it also restored the state of Kuwait. The outcome of the war also led to the establishment of the northern Iraq no fly zone by the US.

140. April 29, 1992 – May 4, 1992: The Rodney King Riots

The Rodney King Riots (or also called the LA riots) is one of the important times in American history because it marked the first federal military intervention in an American city to combat a civil disorder since 1968 with MLK riots. These riots were symbolic of the struggle for racial equality in the U.S. which we still have challenges with today.

141. August 21, 1996: Introduction of HIPAA:

The introduction of HIPAA is a very significant event in U.S. history because it helps to ensure confidentiality and privacy of a patient and it allows patients to access their healthcare data with the reduced risk of fraudulent activity and improved data systems.

142. May 18, 1995: Wells Fargo became the first bank to offer internet banking in the US

Wells Fargo becoming the first bank to offer internet banking is among the important parts of American history because this service has become one of the major services in which banks provide today and it also provides a secure platform for banking customers to store their financial information.

143. July 11, 1995 – U.S. establishes full diplomatic relations with Vietnam

The day when the US established full diplomatic relations with Vietnam is an important event in American history because it has helped the US to prevent war and violence (like what happened with the Vietnam war) as well as strengthen our relationship with Vietnam.

144. 2008: District of Columbia v. Heller:

The court case ruling of District of Columbia v. Heller is a significant piece of United States history because it guarantees an individual the right to possess firearms being independent of service in  state militia and to use firearms for traditionally lawful purposes (such as as home-defense).

145. February 26, 1993: Bomb explodes in basement garage of World Trade Center:

The 1993 World Trade Center bombing is a very important event in American history because it exhibited one of the largest attacks in the history of our country which injured over 1,000 people.

146. 2008: Satoshi Nakamoto creates the Blockchain 

The creation of the Blockchain is a very important event in U.S. history as it has increased trust, security, transparency, and the traceability of data across a business network. This system has made transactions between consumers and businesses much safer and secure and today, the blockchain is used by millions of people all over the U.S. to buy/trade cryptocurrencies.

147. 1810: Fletcher v. Peck:

he Court case decision of Fletcher v Peck is one of the most important pieces of United States history because it expanded the parameters of judicial review as it marked the very first time in the Supreme Court has struck down a state law as unconstitutional.

148. August 21, 1992 – August 31, 1992: Ruby Ridge siege:

The siege at Ruby Ridge is among the most important events in history because this was an event where the government overstepped their boundaries against a private citizen (Randy Weaver) and in this attack. Many times the government has overextended their power within the United States and this is proof that many people in this siege should not have died, if this situation was handled correctly.

149. April 25, 1980: U.S. mission to rescue hostages in Iran is aborted (Operation Eagle claw) 

Operation Eagle Claw is an important event in U.S. history because it was a failed mission to rescue American hostages, but from this, the mission highlighted deficiencies in the operation of the U.S. Military command structure and gave way to the creation of the United States Special Operations Command.

 150. August 20, 1985 – March 4 1987: Iran-Contra scandal 

The Iran-contra scandal is an important piece of United States history because it was one of the major controversial political scandals in the country and many view it as a terrible decision but others believe that it was necessary in order to save the hostages in Iran. 

151. 1991-Present day 2021: The Opioid Epidemic:

he Opioid Epidemic starting in 1991 to today is an important piece of the history in our country because  it is a serious national crisis which affects the public’s health as well as social and economic welfare. These prescriptions to pain relievers, heroin, and synthetic opioids have caused a serious problem in our country that is still to be addressed directly. 

152. October 2, 1835 – April 21, 1836: Texas Revolution:

he Texas Revolution is the an important time in the U.S. History because it was the war that won Texas’ independence from Mexico and led to the founding of the Republic of Texas which it is still called today, despite it also being apart of the United States as a State.

153. April 10, 1790: The US Patent system forms

The formation of the US patent system is a significant segment of history in the country because it has helped to safeguard inventions of others regarding design or process and it has encouraged innovation amongst inventors today.

154. December 23, 1947: The successful demonstration of the Transistor:

The successful demonstration of the transistor is an important event in United States history because this invention revolutionized the world of electronics and became the basic building block upon which all modern computer technology sits.

155. March 19, 2003: War waged by the U.S. and Britain against Iraq begins

The start of the war of the U.S. and Britain against Iraq is among the most significant pieces of American history because it was to remove the weapons and mass destruction and bring  justice to  terrorists that have committed outrageous human rights abuses in Iraq.

156. October 13, 1987 – January 13, 1988: Hazelwood School District v. Kuhlmeier: 

The Court case decision between Hazelwood School District v. Kuhlmeier is an important piece of United States history because it held that schools may restrict what is published in students newspapers and that it did not violate the student’s freedom of speech rights. 

157. 1791-1794: The Whisky Rebellion:

The Whisky Rebellion between 1791 and 1794 is a significant event in U.S. history because this was the first test of Federal authority in the country which in today’s day and age, Federal authority is exercised in many circumstances, not just riots within the U.S. 

158. November 1, 1952: First hydrogen bomb is detonated by the U.S. on Eniwetok (Operation Ivy) 

Operation Ivy is the a significant piece of United States history because the test gave the United States a short-lived advantage in the nuclear arms race with the Soviet Union and proved as a successful method of destruction in war.

159. 1831: Cyrus McCormick, a Virginia blacksmith, demonstrated a mechanical reaper:

The invention of the Mechanical Reaper by Cyrus McCormick in 1831 is a significant event in United States history because this device revolutionized agriculture during this time. The mechanical reaper was used by farmers to harvest crops mechanically. This machine proved to be the answer for wheat farmers because it increased food production as well as made harvesting easier. Farmers could now process more wheat much quicker and with less labor force. Today, we now have machines to help with this type of work in agriculture but this invention was the foundation of it all.

160. August 14, 1935: Social Security Act is passed

The passing of the Social Security Act in 1935 is a significant piece of United States history because the new Act created a social insurance program designed to pay retired workers age 65 or older a continuing income after retirement. This act also enabled the States to make more adequate provision for aged persons, blind persons, dependent and crippled children, maternal and child welfare, public health, and the administration of their unemployment.

161. June 26, 2003: Lawrence v. Texas

The court case decision of Lawrence v. Texas is an important part of American history as it decided that a Texas state law criminalizing certain intimate sexual conduct between two consenting adults of the same sex was unconstitutional. This court case ruling has had a significant effect on the lives of homosexuals here in the U.S.

162. September 4, 1951: President Truman speaks in first coast-to-coast live television broadcast 

The first coast-to-coast television broadcast from President Truman is a significant segment of our history because not only was it he first of many speeches and programs to be broadcasted in this fashion but it focused on Truman’s acceptance of a treaty that officially ended America’s post-World War II occupation of Japan.

163. June 27, 1950: The United State enters the Korean War: President Truman, without the approval of Congress, commits American troops to battle

The entrance of the United States into the Korean War is an important event in our history because it was one of the several (and major) military conflicts in the Cold War against Russia as the U.S. was determined to stop the spread of Communism. In this case, The United States was determined to stop the spread of Communism from North Korea to South Korea and elsewhere. 

164. September 6, 1901: President McKinley is assassinated:

The assasination of President McKinley is an important event in U.S. history because his death led t the creation of the modern secret service which is an important agency that has the mission of protecting the President (and Vice President) and investigating crimes against the United States financial structure.

The executions of Julius and Ethel Rosenberg is a significant segment of our history because it represents a stressful time during the Cold War against Russia and it highlights how crucial intelligence is to not only the U.S. but other countries as well. If the U.S were to not be aware of these Russian spies and their intentions of releasing information about the atomic bomb to Russia, it could have hurt the U.S. substantially. 

166. December 1, 1955: Rosa Parks is arrested:

The arrest of Rosa Parks is among the most significant parts of U.S. history because it led to an important part of the Civil Rights movement: The Montgomery Bus Boycott, which lasted 381 days. Her actions in refusing to give up her seat to a white man; it inspired the leaders of the local Black community to organize the Montgomery Bus Boycott.

167. September 24, 1957: President Eisenhower sends federal troops to Central High School in Little Rock, Arkansas

The Little Rock Crisis in 1957 is an important event in United States history because it helped to draw attention to the Civil Rights movement and it has become an iconic event in the real formal ending of segregation in America.

168. May 2, 2011: Operation Neptune Spear (Killing of Osama Bin Laden):

The takedown of Osama Bin Laden during the raid operation known as Operation Neptune Spear is a significant event in American history because it marked an end to the man who planned the September 11 attacks in which was one of the most devastating in American history. Without certain like the CIA and the navy Seal teams, Osama Bin Laden might not have been caught

169. 2012: Creation of NFTs (Non-Fungible Tokens):

The creation of NFTs in 2012 is a significant part of American history as it has led way to becoming one of the most profitable blockchain-based experiments in history, as NFTs provide the ability to secure value in digital artforms.

170. April 17, 1905: Lochner v. New York:

The Lochner v. New York court case decision is an important event in our history because it held that limits related to working time had violated the 14th amendment. This case is one of the most controversial decisions in our history and it came to cause the Lochner era in which the Supreme Court issued several decisions which disproved state and federal statutes that tried to regulate working conditions through the Great Depression and Progressive Era.

171. April 27, 1953: President Eisenhower Effectively Bans LGBT People From Government

The Executive Order from President Eisenhower on banning LGBT people from government is an important piece of U.S. history because this sparked an outrage that was needed to begin the striving for equality for those in the LGBT community. 

172. June 18, 1929: The Permanent Reapportionment act of 1929: 

The Permanent Reapportionment act is an important piece in United States history because it restricted the size of the U.S. House of Representatives despite population size. The reason why this is so important is that areas with large populations like California, have less representation in the house as they can only have a constant 435 seats.

173. July 17 – August 2, 1945: President Truman, Churchill, and Stalin meet at Potsdam

The Potsdam Conference is an important event to United States history because it  is where the “Big Three”(USSR, U.S., Great Britain) issued a declaration demanding the surrender from Japan, and the outcome of the things discussed in the Potsdam Conference also helped to build tensions between the U.S. and the USSR (leading into the cold war).

174. 1869: Creation of the MLB (Major League Baseball) 

The creation of the MLB as an organization is animportant piece of U.S. history because baseball has had a very active role in the shaping of America. From the Civil War to Civil Rights and all points in between and beyond, the game of baseball supports and reflects many aspects of American life, from culture to economics and technological advances. Baseball is a huge part of American society today.

175. September 17, 1920: Creation of the NFL (Nation Football League) 

The creation of the NFL in 1920 is a significant piece of American history because this sport has become a major part of our culture. Football has dramatically changed what our society likes to prioritize and is one of the most loved and played sports here in the U.S.

176. February 27, 1951: Twenty-Second Amendment to the Constitution is ratified

 The 22nd Amendment to the Constitution is an important event in United States history because The amendment caps the service of a president at 10 years or 2 terms, so the president does not gain too much power within his branch.

177. May 4, 1886: The Haymarket Affair 

 The Haymarket Affair is a very significant event in U.S. history  as it was one of the largest occurrences of civil unrest in America as it ranged from 300,000 to half a million striking workers. The Haymarket Riot has become a symbol of the international struggle for worker’s rights. 

178. 1974: The invention of the first Consumer computer; The MITS Altair 8800

The invention of the first consumer based computer is an important event in American history because it allowed for much easier and cheaper manufacturing of computers than it had been in years prior. As a result of this invention, the microcomputer was invented which significantly reduced the size and weight of a normal computer. Today, we see the benefit of this invention as further improvements and alterations have been made to this idea to where we have very powerful compact PCs and Laptops.

179. 1898: The Invention of the electric Hearing aid:

The hearing aid invention is an important part of American history because it has opened the door for those with hearing disabilities to be able to hear their surroundings and communicate better with others.

180. November 3, 1903: The United States acquired the Panama Canal zone from the French for $40 million.

he Hay-Bunau-Varilla treaty agreement between the French and the United States is an important part of our history because it granted exclusive rights for the U.S. across the Isthmus of Panama. This treaty also sparked a series of issues that would span for decades between the U.S. and the native Panamanians over the land rights to the canal zone.

181. June 30, 1906: Establishment of the FDA

The Establishment of the Food and Drug Administration is a significant piece of American history because this administration has been responsible for protecting the public health. The FDA does this by ensuring safety, efficacy, and security of human and veterinary drugs, biological products, and medical devices which is very important to Americans today.

182. March 10, 1910: The first film made entirely in Hollywood was a short film in 1910 titled In Old California

The first Hollywood film in 1910 is one of the most significant parts of American history because it marked the beginning of the oldest film industry where millions of films have been produced and become a major part of American culture today.

183. 1912: The invention and first use of the Traffic light by Lester Farnsworth Wire

The invention of the traffic light by Lester Wire is a significant piece of U.S. history because it has provided more safety measures for traffic that has likely save millions of lives of pedestrians, bicyclists, and car drivers today. 

184. March 26, 1790: US Congress passes Naturalization Act

  The naturalization act of 1790 is a significant piece of American history because it limited access to U.S. citizenship to white immigrants and granted citizenship to children born abroad to U.S. citizens; this act provided for the first uniform naturalization laws in the U.S.

185. November 11, 1926: U.S. Starts Numbered Highway System

The start of the numbered highway system in the U.S. is a significant event in our history as it  has made it easier for the growing number of car owners to figure out how to get from one city or town to the next and it opened the way for the great American road-trip tradition.

186. February 7, 1795: 11th Amendment to US Constitution ratified

The 11th amendment to the U.S. constitution is among the most important segments of history in the U.S. because it broadly prevented suits against states by citizens of other states or by citizens or subjects of foreign jurisdictions which still shows its effects today.

187. February 1, 2003: The Columbia Disaster

The Columbia Disaster in 2003 is an important event in American history because it marked the Second disaster after the failure of the Challenger Space shuttle launch which led to the direct retirement of the Space Shuttle Fleet in 2011. 

188. April 20, 1999: School shooting at Columbine High School in Littleton, Colorado

The Columbine High school Shooting in 1999 is a significant piece of United States history as it changed America in regards to Gun laws and the seriousness of Public school threats and this marked the first school shooting in America to date. 

189. August 20, 1998: U.S. launches missile attacks on targets in Sudan and Afghanistan

Operation Infinite reach in 1998 is an important part of the history of the United States because this operation was the first time the U.S. had unreservedly acknowledged a preemptive military strike against a terrorist organization or network. Operation Infinite Reach was a defining point in change for United States foreign policy for that reason, as well as with the idea of using cruise missiles instead of air strikes and boots on the ground due to cruise missiles having less restrictions for use.

190. August 3, 1949: Formation of the NBA (Nation Basketball Association) 

As the 3rd most popular sport in the country; the Formation of the NBA is a significant part of American history because it has had a large impact on our society. Basketball culture has influenced business, social life, and clothing styles.

191. April 3, 1860- October 26, 1861: The Pony Express 

The Pony Express is an important part of U.S. History because it allowed for letters to be sent faster with much less expense in the early 1860s. Even though it was replaced quite quickly by the electric telegraph, it still was a very significant part of how people received information during the timeframe.

192. 1872: Jehovah’s Witnesses is founded:

he founding of the Jehovah’s Witness religion is am significant part of U.S. history as this religious organization as now they are one of the fastest growing church bodies in the U.S. and has brought a number of landmark cases to the U.S. Supreme Court in the 20th century. These trials tested and strengthened America’s First Amendment laws protecting the freedoms of expression, belief and assembly.

193. August 7, 1998: United States Embassy bombing:

The United States Embassy bombings in Tanzania and Kenya are important parts of history in our country as it killed over 200 people including 12 Americans and wounded more than 4,000. The bombings are widely believed to have been revenge for U.S. involvement in the extradition, and alleged torture, of four members of Egyptian Islamic Jihad who had been arrested in Albania for an alleged series of murders in Egypt in the two months prior to the attacks.

194. September 18, 1947: The Central Intelligence Agency is established (CIA):

The establishment of the CIA is an important event in the U.S. because of what they agency contributes. The goal of the CIA is to gather international security information from other countries and intelligence. The CIA is vital to the national security of the United States and U.S. policymakers make decisions by the information that is provided.

195. June 14, 1938: The Fair Labor Standards Act of 1938:

The Korematsu v. United States court case is an important piece in U.S. History because it is the only case in the Supreme court history in which the Court, using a much less strict test for potential racial discrimination, upheld a restriction on civil liberties. Essentially, a son of a Japanese immigrant who was born in Oakland, California was convicted of violating the Japanese exclusion order that required him to be forced to relocate in World War II.

196. April 16, 2007: Virginia Tech Shooting:

The Virginia Tech shooting in 2007 is a significant part of United States history because it is the largest school shooting in the country’s history as it killed 32 people and injured 17 others. This shooting has also led to the widespread media coverage of criticism of hun culture. 

197. January 1836: The siege of the Alamo began at San Antonio, Texas.

The Siege of the Alamo is a significant piece of United States history The Alamo memorializes the first battle of the American Civil War and it is the first Confederate monument to slavery.

198. 2010: US and Russia announce agreement on a new nuclear arms reduction treaty to replace the 1991 Strategic Arms Reduction Treaty

The replacement of 1991 Strategic Arms Reduction Treaty is an important part of the history of the United States because it renewed an old treaty against nuclear arms. The reason why this is so important is because the U.S. and Russia are among the worlds largest superpowers and the creation of this treaty acts as a safeguard against Nuclear warfare that could cost millions of lives. 

199. 1829–1837: Era of the Common man:

The Era of the Common Man movements from 1829 to 1837 is a significant part of U.S. history because it allowed for average people the right to vote, without the distinction of owning land, nominating candidates to office, and rewarding the politicians that represented the common man’s interests.

200. 2020: Ramos v. Louisiana

The court case ruling of Ramos v. Louisiana is one of the most significant events in United States history because it held that The Sixth Amendment to the United States Constitution requires that guilty verdicts for criminal trials be unanimous.

201. November 15, 1999:  U.S. and China sign historic trade agreement

The Trade agreement between the U.S. and China in 199 is an important historical event in United States history because it lowered the barriers that businesses had reaching to consumers in China and it has paved the way for China’s entry to the World Trade Organization. Today, China plays a big role in the U.S. economy as many of our products that we see in our retail stores are produced there for Inexpensive labor. 

202. February 14, 2005: The Creation of Youtube on the Internet: 

he Creation of Youtube on the Internet is a significant piece of history in the United States because it has served as a platform for any individual to post any type of video content online where today this social media platform has grown to become one of the largest video distribution sites in the world and a major source of information and entertainment online.

203. February 4, 2004: The Opening of Facebook

The Opening of Facebook is a significant event in American history because it marked the beginning of the largest and most recognizable social media network which has fundamentally changed our society (especially our businesses).

204. January 9, 2007: The unveiling of the first iPhone:

The unveiling of the first iPhone is one of the important parts of American history as this debut of the touchscreen technology that was implemented into the iPhone became revolutionary for this space. Now, in 2021 iPhone sales make up 58.9% of Apple’s total revenue.

205. January 28, 1986: Space shuttle Challenger exploded 73 seconds after liftoff, killing all seven crew members. 

The explosion of the Challenger Space Shuttle in 1986 is a significant piece of United States history because it was the first major shuttle accident and as a result, NASA did not send astronauts into space for more than two years as it redesigned a number of features of the space shuttle.

206. October 1958:  Physicist Invents First Video Game

The invention of the first video game in 1958 is an important event in United States history because it was the foundation for all video games and with its success, it has started a revolution in which would grow for years to come and it has reshaped the entertainment industry into what it is today

207. February 1692 – May 1693: The Salem Witch trials 

The Salem Witch trials from 1692 to 1693 is a significant time in the history of the United States because it contributed to changes in U.S. court procedures, including rights to legal representation and cross-examination of accusers as well as the presumption that one is innocent until proven guilty.

208. January 30, 1930 – June 1, 1931: Near v. Minnesota:

he court case decision of Near v Minnesota is asignificant event in U.S. history as it found that past restraints on the publication had violated the freedom of the press under the First Amendment. This decision is still applied today and helps to support the foundation of U.S. citizen’s First Amendment rights. 

209. 1919: Schenck v. United States:

The court case decision of Schenck v. United States is an important part of history in the United States because it ruled that freedom of speech is protected under the first amendment but could be restricted if the words or print represented a “clear and present danger” to society. With this, our freedom of speech rights are restricted but are necessary in order to protect the people.

210. July 1, 1971: The Twenty-Sixth Amendment to the Constitution is ratified

The ratification of the Twenty-sixth Amendment to the Constitution is an important event in U.S. history because it prohibits the states and the federal government from using age as a reason for denying the right to vote to citizens of the United States who are at least eighteen years old. 

211. 1972: The Equal Rights Amendment 

 The Equal Rights Amendment in 1972 is a significant piece of United States history because it would prohibit denying or abridging equal rights under law by the United States or any state on account of sex. This critical amendment would guarantee the equal rights of men and women by ensuring that government programs and federal resources benefit men and women equally.

212. April 19, 1995: Oklahoma City Bombings:

 The Oklahoma City bombings is a significant event in the history of the United States because of the legislation that it caused to pass. In response to the bombing, U.S. Congress passed the Antiterrorism and Effective Death Penalty Act of 1996. These acts that were passed as a result of the Oklahoma City bombings tightened the standards for habitus corpus in the United States and also passed legislation to increase the protection around federal buildings to deter future terrorist attacks.

213. 1976: Buckley v. Valeo:

he Court case decision of Buckley v. Valeo is an important piece of U.S. history because it struck down the portion of the Federal Election Campaign Act that set limits on the amount of money individuals could contribute to their own campaigns.

214. 1940: Minersville School District v. Gobitis:

The court case decision of Minersville School District v. Gobitis is a significant piece of United States history as the ruled that the government could require respect for the flag as a key symbol of national unity and a means of preserving national security.

215. 1986: Bowers v. Hardwick:

The court case decision of Bowers v. Hardwick is an important part of U.S. history as it struck down a Texas state law that had criminalized homosexual sex between consenting adults and that it was part of the liberty protected by substantive due process under the Due Process Clause of the Fourteenth Amendment to the U.S. Constitution.

Hurricane Katrina and the Catastrophic damage that it caused is a significant piece of U.S. history because it was the costliest in U.S. history and left widespread economic impacts. Oil and gas industry operations were crippled after the storm and coastal communities that rely on tourism suffered from both loss of infrastructure and business and coastal erosion.

217. 1930: The Invention of the Cardiac Defibrillator

The invention of the Cardiac Defibrillator in 1930 is a significant piece of United States history because they strengthen the Chain of Survival. They can restore a normal heart rhythm in victims of sudden cardiac arrest which many who suffer from heart issues benefit from today. 

218. March 17, 1930 – April 11, 1931: The start and completion of the Empire State Building in New York

The construction of the Empire state building is a significant part of United States history because it has symbolized the technological prowess and economic strength of the United States and also has become a very popular tourist attraction. 

219. June 19, 1885: France gifts the United States the Statue of Liberty:

The gifting of the Statue of Liberty to the U.S. from France is a significant part of United States history because the monument celebrates the friendship the two endured during the American Revolution. Over the years, the Statue of Liberty has symbolized the freedom and the democracy of the United States.

220. July 25, 1952: Puerto Rico becomes a U.S. commonwealth

Puerto Rico becoming a commonwealth of the United States is an important part of the history in our country as the strategic value of Puerto Rico for the United States at the end of the nineteenth century centered in economic and military interests. The island’s value to US policy makers was as an outlet for excess manufactured goods, as well as a key naval station in the Caribbean.

221. August – September 2004: Four hurricanes devastate Florida and other parts of the southern United States

 The Atlantic Hurricane season of 2004 is a significant part of the history in the United States because of how deadly and destructive it was. This hurricane season affected many pats of the South Eastern parts of the United States and caused over 3,200 deaths and more than $61 billion in damage. 

222. January 15, 1915: First long distance telephone service, between New York and San Francisco, is demonstrated

The demonstration of the first long distance telephone service is a significant event in the United State history because it marked the beginning of a service that everyone takes advantage of today.

223. October 20, 1818: Treaty of 1818:

The Treaty of 1818 is a significant part of United States history because it established the boundary between U.S. and Canadian territories at the 49th parallel and also paved the way for smooth relations between the U.S. and Canada.

224. 1807: Act Prohibiting Importation of Slaves

The act of 1807 in prohibiting the Importation of Slaves is a significant piece of United States history because of its devastating effect on American trade as all vessels under the U.S. jurisdiction had found themselves restricted from making foreign voyages and trade ships sat to rot which took away one of the largest sources of income for many investors in trade for a period of time. 

225. March 29, 2021 – April 20, 2021: Derek Chauvin Trial:

The Derek Chauvin trial on account of the death of George Floyd is a important event in U.S. history as the decision to charge him with manslaughter and second degree murder has led to further restrictions on Police officers and it has played an important role in the “Black Lives matter movement”.

226. June 17, 2019: Gamble v. United States:

The court case ruling of Gamble v. United States is a significant event in the history of our country as the conclusion protects individuals from being punished twice “for the same offence,” and if an individual is tried by two sovereigns, those are two separate offences.

227. August 15, 1914: Panama Canal opens to traffic

The Panama Canal opening for traffic is an important part of United States history as the canal permits shippers of commercial goods, ranging from automobiles to grain, to save time and money by transporting cargo more quickly between the Atlantic and Pacific Oceans.

228. April 8, 1913: The Seventeenth Amendment is ratified:

The ratification of the 17th Amendment is asignificant part of United States history because it gave people the right to vote for their senators instead of the state legislature; this is called direct election, where the people choose who is in office.

229. 1800 – 1870: The Second Great Awakening

The Second Great Awakening in the US is a significant piece of history in America because it has influenced many things. The Great Awakening saw a great increase in church memberships among Baptist and Methodist churches and it stimulated several moral and philanthropic reforms which include the emancipation of women and temperance. 

230. December 1958: Invention of Laser technology:

The invention of laser technology in 1958 is a significant piece of Untied States history because they have had such a large impact on the types of things that we have in our modern households and businesses today such as optical disc drives, laser printers, barcode scanners, laser surgery, and many more. 

231. June 15, 1846: Oregon Treaty : 

The Oregon Treaty of 1846 is a significant piece of United States history because it established a boundary between the US and Britain which settled the boundary dispute whereas the British gained the land north of the 49th parallel (where modern-day Vancouver island is) and the U.S. received everything lower than the parallel. 

232. December 7, 1877: The demonstration of the Phonograph

The successful demonstration of the Phonograph by Thomas Edison is a significant piece of United States history because it allowed for people to listen to whichever music they wanted at any time and it changed the way they listened to music and led to the instrumental development of Jazz and aiding those with hearing impairments. 

233. 1917: Creation of the First Propaganda Agency in the United States:

 The creation of the First propaganda Agency in the US in 1917 is an important part of American history because it became the official establishment of one of the most powerful tools that our country has in influencing our opinions and thoughts on certain subjects. Today, many propaganda agencies exist for influencing American citizens in regards to their thought about our country (like legislation and who to vote for office) but also businesses as well. 

234. February 21, 1965: The Assasination of Malcolm X

The Assasination of Malcolm X in 1965 is an significant piece of United States history because it marked an end to one of the most significant figures within the American black nationalist movement. Many of the ideas he articulated, like race pride and self-defense, became ideological mainstays of the Black Power movement that emerged in the 1960s and ’70s.

235. April 1832: The Black Hawk war began on the American frontier

The Black Hawk War is an important event in the United States’ history because the war gave impetus to the U.S. policy of Indian removal, in which Native American tribes were pressured to sell their lands and move west of the Mississippi River to reside.

236. 1815: The Invention of Dental Floss: 

 The invention of the very first Dental Floss in 1815 is an important part of the history in the United States because it has become an important part of American’s ideal surrounding hygiene and is utilized by millions of Americans today.

237. January 1, 1831: William Lloyd Garrison began publishing The Liberator, an abolitionist newspaper, in Boston, Massachusetts

The publication of the Liberator in 1831 is an important piece of U.S. history because as a widely circulated newspaper during the antebellum period and the Civil war, it became a large impact on influencing the Anti-slavery movement

238. March 20, 1816: Martin v. Hunter Lessee:

The court case ruling of Martin v. Hunter Lessee in 1816 is an important part of U.S. history because The Court rejected the notion that state governments held equal powers with the federal government. 

239. August 21, 1831: Nat Turner led a rebellion by enslaved people in Virginia

The Nat Turner Rebellion in 1831 is a significant event in the history of our country because it destroyed the white Southern myth that slaves were actually happy with their lives or too docile to undertake a violent rebellion. His revolt hardened proslavery attitudes among Southern whites and led to new oppressive legislation prohibiting the education, movement, and assembly of slaves.

240. December 17 1801: The Treaty Of Fort Adams Is Signed

The treaty of Fort Adams is an important piece of United States history as it was the first in a series of treaties that ceded Choctaw land to the U.S. government and eventually led to the expulsion of the Choctaw Nation from lands east of the Mississippi River.

241. August 24, 1814: Burning of Washington:

The Burning of Washington is an important event in the history of our nation as it symbolized that the young nation that was built upon democracy and freedom was able to take a major world power head-on and come out victorious.

242. January 8, 1815: Battle of New Orleans

The Battle of New Orleans in 1815 is a significant event in U.S. history because the battle thwarted a British effort to gain control of a critical American port, elevated Maj. Gen. Andrew Jackson to national fame, and was the greatest land victory in the War of 1812.

243. 1819: Dartmouth College v. Woodward:

The Court case ruling of Dartmouth College v. Woodward in 1819 is a significant event in U.S. history because the decision helped establish the principle that corporations, such as Dartmouth College, were protected from alteration by states for public reasons.

244. 2018: Janus v. AFSCME

The court case ruling of Janus v. AFSCME is one of the most important pieces of United States history because it ruled that state laws obliging nonunion employees to pay fees to the unions that are their “exclusive bargaining representative” are unconstitutional on First Amendment grounds.

245. August 15, 1969 – August 18, 1969: Woodstock:

The Woodstock music festival is a significant part of the history of the United States because it impacted United States culture by giving a voice to the often overlooked community of hippies and legitimizing the anti-war sentiment they were experiencing with the Vietnam War.

246. 1877: Compromise of 1877:

The compromise of 1877 is a significant piece of U.S. history because it settled the intensely disputed 1876 presidential election and resulted in the United States federal government pulling the last troops out of the South, and ending the Reconstruction Era.

247. August 9, 1814: Treaty of Fort Jackson

The Treaty of Fort Jackson is an important part of the history of the United States because it ended the fighting of the Creek War, but began a series of negotiations between the Creek community and the U.S. Government for land, property, and monetary resources. Also, under the terms of the treaty, the Creek Nation ceded nearly 22 million acres to the United States.

248. February 22, 1819: Adams-Onís Treaty

The Adams-Onís Treaty in 1819 is an important event in United States history because it settled border disputes between the United States and the Spanish Empire, and proved vital to the nation’s security.

249. August 15, 1916: U.S. agrees to purchase Danish West Indies (Virgin Islands) for $25 million 

The purchase of the Danish West Indies ( also known as the US Virgin Islands) is one of the most significant part of U.S. history because it helped to protect the panama canal during wartime and today produces billions of dollars from rum, tourism, and oil sales.

250. October 8, 1871 – October 10, 1871: Great Chicago Fire:

The Great Chicago Fire in 1871 plays an important part in U.S. history as the fire destroyed more than 800 buildings over 60 acres. After the 1874 fire, the slow and expensive process of rebuilding with fireproof materials began. Big banks and businesses, which handled millions of dollars in revenue every year, dominated Chicago’s new business district. The city’s fire and building codes were strengthened considerably after the fire, specifically placing more stringent regulations and thorough safety inspections of fire protection systems.