2 | 1939 | - 1 Sep 1939—15 Aug 1945: World War ll
World War II (WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945. 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.
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