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When the Black hand from Serbia, murdered him this caused war which would lead to WW1.
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First battle of the war, taking place on the Western Front. Ending in a German victory.
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The British passenger ship had Americans on it which caused a spark in the US to join the war against the central powers
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A telegram sent to Mexico from Germany, asking Mexico to attack America
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A treaty creating peace but Germany between Germany and Russia, but Germany gained much of Russia's population and
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Treaty ending World War 1, but still some were fighting around the world.
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Finishing any conflict of WW1, and making Germany take care of the reparations.