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February 27
The Twenty-second Amendment to the United States Constitution, limiting Presidents to two terms, is ratified. |
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January 7
President Harry Truman announces that the United States has developed the hydrogen bomb. |
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January 21
The first nuclear-powered submarine, the USS Nautilus, is launched in Groton, Connecticut by Mamie Eisenhower, the First Lady of the United States. |
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January 3
The Alaska territory becomes the State of Alaska, the 49th to join the union. |
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February 3
A plane crash near Clear Lake, Iowa kills Buddy Holly, Ritchie Valens, The Big Bopper, and pilot Roger Peterson and the incident becomes known as The Day the Music Died. |
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August 21
The Hawaii Territory becomes the State of Hawaii, the 50th State to join the Union.
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