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| 10029250063 | June 25, 1950 | Korean War begins between North Korea (with the support of China and the Soviet Union) and South Korea (with the principal support of the United States). |  | 0 |
| 10029250111 | September 04,1951 | The first live transcontinental television broadcast takes place in San Francisco, California from the Japanese Peace Treaty Conference. One month later, the situation comedy I Love Lucy premieres on CBS, sparking the rise of television in the American home and the Golden Age of Television. |  | 1 |
| 10029250064 | June 19, 1953 | Julius and Ethel Rosenberg executed. They were were United States citizens who were accused of spying for the Soviet Union and were tried, convicted, and executed by the United States government. |  | 2 |
| 10029250065 | May 13, 1954 | Saint Lawrence Seaway Act, permitting the construction of the system of locks, canals and channels that permits ocean-going vessels to travel from the Atlantic Ocean to the North American Great Lakes, is approved. |  | 3 |
| 10029250066 | September 12, 1954 | The People's Republic of China lays siege on Quemoy and Matsu Islands; Eisenhower sends in Navy to demonstrate an invasion of Taiwan would not be permitted. |  | 4 |
| 10029250067 | December 1, 1955 | Rosa Parks incites the Montgomery bus boycott. |  | 5 |
| 10029250068 | April 12, 1955 | Jonas Salk develops polio vaccine. |  | 6 |
| 10029250069 | September 9, 1957 | Civil Rights Act of 1957, primarily a voting rights bill, becomes the first civil rights legislation enacted by Congress since Reconstruction. |  | 7 |
| 10029250070 | September 25, 1957 | Little Rock, Arkansas school desegregation. |  | 8 |
| 10029250071 | May 1, 1960 | U-2 incident, wherein a CIA U-2 spy plane was shot down while flying a reconnaissance mission over Soviet Union airspace. |  | 9 |
| 10029250072 | November 8, 1961 | John F. Kennedy becomes President. |  | 10 |
| 10029250073 | 1961 | Vietnam War- 900 military advisors land in Saigon. |  | 11 |
| 10029250074 | October 16-28, 1962 | Cuban Missile Crisis, which becomes the closest nuclear confrontation (as of 2010) involving the U.S. and USSR. |  | 12 |
| 10029250075 | August 28, 1963 | March on Washington; Martin Luther King, Jr. "I Have a Dream" speech. |  | 13 |
| 10029250076 | July 2, 1964 | Civil Rights Act of 1964, outlawing major forms of discrimination against blacks and women, and ended racial segregation in the United States. |  | 14 |
| 10029250077 | February 21, 1965 | Malcolm X an African-American Muslim minister, public speaker, and human rights activist is assassinated in Harlem, New York. |  | 15 |
| 10029250078 | 1966 | The three major American television networks—NBC, CBS and ABC—have full color lineups in their prime-time schedules. |  | 16 |
| 10029250079 | April 4, 1968 | Martin Luther King Jr. is assassinated. The assassination led to a nationwide wave of race riots in Washington, D.C., Chicago, Baltimore, Louisville, Kansas City, and dozens of other cities. |  | 17 |
| 10029250080 | July 21, 1969 | Neil Armstrong walks on the Moon. When he stepped onto the lunar surface he said: "That's one small step for man, one giant leap for mankind." |  | 18 |
| 10029250081 | March 23, 1971 | 26th Amendment ratified, allowing 18-year-olds to vote. |  | 19 |
| 10029250082 | October 24, 1972 | Jackie Robinson dies. He was an American professional baseball second baseman who became the first African American to play in Major League Baseball (MLB) in the modern era. |  | 20 |
| 10029250083 | October 20, 1973 | During the Watergate Scandal, President Nixon fires three Attorneys General over disposition of the secret tapes and the actions of the Special Prosecutor. |  | 21 |
| 10029250084 | April 30, 1975 | Fall of Saigon. The event marked the end of the Vietnam War and the start of a transition period to the formal reunification of Vietnam into the Socialist Republic of Vietnam. |  | 22 |
| 10029250085 | April 4, 1975 | Bill Gates founds Microsoft, which in time will dominate the home computer operating system market. |  | 23 |
| 10029250086 | August 16, 1977 | Elvis Presley, the king of rock and roll dies in his home in Graceland at age 42. 75,000 fans lined the streets of Memphis for this funeral. |  | 24 |
| 10029250087 | October 27, 1978 | Humphrey Hawkins Full Employment Act signed into law, adjusting the government's economic goals to include full employment, growth in production, price stability, and balance of trade and budget. | 25 | |
| 10029250088 | March 17, 1980 | Refugee Act, which reformed United States immigration law and admitted refugees on systematic basis for humanitarian reasons. |  | 26 |
| 10029250089 | May 18, 1980 | Mount St. Helens eruption in Washington kills 57. |  | 27 |
| 10029250090 | July 7, 1981 | Sandra Day O'Connor becomes first woman on the U.S. Supreme Court. |  | 28 |
| 10029250091 | October 25, 1983 | Citing the threat posed to American nationals on the Caribbean nation of Grenada by that nation's pro-Marxist regime, President Ronald Reagan ordered U.S. forces to invade the island and to secure their safety. |  | 29 |
| 10029250092 | October 18, 1985 | Nintendo Entertainment System is released to the public. |  | 30 |
| 10029250093 | August 8, 1988 | Wrigley Field in Chicago, Illinois, becomes the last Major League Baseball park to add lights for night games. |  | 31 |
| 10029250094 | March 24, 1989 | Exxon Valdez oil spill in Alaska's Prince William Sound. The tanker ran aground on Bligh Reef in Alaska on March 24, 1989, releasing nearly 11 million gallons of crude oil into Prince William Sound. |  | 32 |
| 10029250095 | August 2, 1990 | The Gulf War is waged in the Middle East, by a U.N. authorized coalition force from thirty-four nations, led by the U.S. and the United Kingdom, against Iraq. |  | 33 |
| 10029250097 | August 6, 1991 | The World Wide Web is publicly debuted as an Internet service. |  | 34 |
| 10029250098 | January 1, 1994 | NAFTA came into force. The North American Free Trade Agreement is an agreement signed by Canada, Mexico, and the United States, creating a trilateral trade bloc in North America. |  | 35 |
| 10029250099 | April 19, 1995 | The Oklahoma City bombing was a domestic terrorist truck bombing on the Alfred P. Murrah Federal Building in downtown Oklahoma City, Oklahoma. |  | 36 |
| 10029250100 | September 11, 2001 | Four passenger airliners were hijacked by 19 al-Qaeda terrorists. Two of the planes, American Airlines Flight 11 and United Airlines Flight 175, were crashed into the North and South towers, respectively, of the World Trade Center complex in Lower Manhattan. |  | 37 |
| 10029250101 | October 7, 2001 | The United States launches the invasion of Afghanistan marking the start of Operation Enduring Freedom. |  | 38 |
| 10029250102 | October 26, 2001 | The Patriot Act is signed into law by President George W. Bush. It authorizes measures to enhance the ability of domestic security services to prevent terrorism. |  | 39 |
| 10029250112 | February 4, 2004 | The social networking website Facebook is launched. |  | 40 |
| 10029250103 | May 17, 2004 | Massachusetts becomes the first state to legalized same -sex marriage in compliance with a ruling from the state's Supreme Court ruling in Goodridge v. Department of Public Health. |  | 41 |
| 10029250104 | September 15, 2008 | Hurricane Ike kills 100 people along the Texas coast, produces $31 billion in damage, and contributes to rising oil prices. |  | 42 |
| 10029250105 | January 20, 2009 | Barack Obama is inaugurated as the 44th President of the United States. He is the first African-American to hold the office. |  | 43 |
| 10029250106 | May 2, 2011 | Osama bin Laden, leader of al-Qaeda and mastermind of the September 11 attacks, is killed in Abbottabad, Pakistan, by U.S. Navy SEALs. |  | 44 |
| 10029250107 | June 1, 2011 | The Space Shuttle Atlantis touches down at the Shuttle Landing Facility at Kennedy Space Center, ending the 30-year shuttle program, which began with the launch of shuttle Columbia on April 12, 1981. |  | 45 |
| 10029250108 | May 20, 2013 | A tornado devastates suburbs near Oklahoma City, killing 24. |  | 46 |
| 10029250109 | June 26, 2013 | The Supreme Court strikes down the Defense of Marriage Act, which banned the federal recognition of same-sex marriages. This resulted in the re-legalization of same-sex marriage in California. |  | 47 |
| 10029250110 | August 9, 2014 | A grand jury decides not to charge Officer Darren Wilson in the shooting death of Michael Brown, inciting protests and riots against racism and police brutality in the St. Luis area. |  | 48 |
| 10029250113 | June 26, 2015 | Same sex marriage is legalized in all 50 states in the landmark civil rights case of Oberfell v. Hodges. |  | 49 |
