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Archduke Ferdinand is assassinated
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presidents Wilson do not want to get involve
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Austria-Hungary declares war on Serbia
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Ottoman almost declares war on it self
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Lusitania, British ocean liner, the sinking of which by a German U-boat on May 7, 1915, contributed indirectly to the entry of the United States into World War I.
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On January 16, 1917, British code breakers intercepted an encrypted message from Zimmerman intended for Heinrich von Eckardt, the German ambassador to Mexico.
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Germans was trying to contact mexico but the contact was destroys.
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A group of Communists led by Vladimir Lenin, the Bolsheviks, overthrew the government in November 1917
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Germany asked the Allies for an armistice ,an agreement to stop fighting rather than surrender, as they knew that they could no longer win the war
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World War I officially ended with the signing of the Treaty of Versailles on June 28, 1919.