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WW1 started in 1914, a result of the assassination of Archduke Ferdinand of Austria. That year, several European countries declared war on each other. In 1917, the US entered, declaring war on Germany.

WW2 is generally agreed to have started on September 1, 1939 with the German invasion of Poland. The US entered the war after the Japanese bombing of Pearl Harbor in December of 1941.

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The world war I begin at 28 July 1914.

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13y ago
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1914

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15y ago
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Q: What year did the world war began?
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