|  | Date | Event(s) | 
| 1 | 1955 | 1 Nov 1955—27 Jan 1973: Vietnam WarDuration of America's involvement in the Vietnam War (Second Indochina War)
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| 2 | 1959 | 3 Jan 1959: Alaska Becomes 49th StateOffical date that Alaska becomes the 49th State of the United States
21 Aug 1959: Hawaii Becomes 50th US StateOfficial date Hawaii becomes the 50th State of the United States
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| 3 | 1961 | 1961: Oral Polio Vaccine IntroducedThe year the oral polio vaccine came into commercial use
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| 4 | 1963 | 22 Nov 1963: Assassination of John F KennedyDate President John F Kennedy was assassinated
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| 5 | 1968 | 4 Apr 1968: Assassination of Martin Luther King Jr.Date Martin Luther King Jr. assassinated
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| 6 | 1969 | 20 Jul 1969: First Moon LandingCommander Neil Armstrong and lunar module pilot Buzz Aldrin formed the American crew that landed the Apollo Lunar Module Eagle on July 20, 1969, at 20:17 UTC.
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| 7 | 1990 | 2 Aug 1990—28 Feb 1991: Desert StormDuration of America's involvement in Desert Storm (First Iraq War)
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| 8 | 2001 | 11 Sep 2001: 9/11/2001 Terrorist AttackDate of terrorist attacks at the New York City World Trade Centers and Pentagon in Washington, D.C.
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