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			 Date | 
			 Event(s) | 
		
	
| 1  | 1914  | - 28 Jul 1914—11 Nov 1918: World War I
 World War I (WWI or WW1), also known as the First World War or the Great War, was a global war centered in Europe that began on 28 July 1914 and lasted until 11 November 1918. 
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| 2  | 1929  | - 1929—1939: The Great Depression
 The Great Depression was a severe worldwide economic depression in the 1930s. The timing of the Great Depression varied across nations; however, in most countries it started in 1929 and lasted until the late 1930s. 
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| 3  | 1939  | - 1 Sep 1939—2 Sep 1945: World War II
 World War II (WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, though related conflicts began earlier. It involved the vast majority of the world's nations--including all of the great powers--eventually forming two opposing military alliances: the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. 
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