|  | Date | Event(s) | 
	
| 1 | 1861 | 12 Apr 1861—9 Apr 1865: Civil WarThe American Civil War was a civil war in the United States between the Union ("the North") and the Confederacy ("the South")
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| 2 | 1914 | 28 Jul 1914—11 Nov 1918: World War IWorld War I, often abbreviated as WWI, was a global conflict fought between two coalitions, the Allied Powers and the Central Powers. Fighting took place throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia
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| 3 | 1929 | 1929—1939: The Great DepressionTimeline of the Great Depression
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| 4 | 1939 | 1 Sep 1939—2 Sep 1945: World War IIWorld War II or the Second World War, often abbreviated as WWII or WW2, was a global conflict that lasted from 1939 to 1945.
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