1906—1906: The 1906 San Francisco earthquake (estimated magnitude 7.8) on the San Andreas Fault destroys much of San Francisco, California, USA, killing at least 3,000.
2
1914
1914—1918: World War I
3
1919
1919—1933: Prohibition of alcohol occurs in the United States.
4
1929
1929—1940: The Great Depression
5
1939
1939—1945: World War II
6
1949
1949—1949: Establishment of the defense alliance NATO.
7
1950
1950—1953: Korean War
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