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Archduke Franz Ferdinand and his wife are assassinated at Sarajevo
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Emperor Franz Joseph of Austris declared war on Serbia after the heir to the throne of the Austria-Hungarian Empire was assasinated
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Germany declares war on Belgium and invades to the right to defeat France. The result of this invasion led to Britain declaring war on Germany.
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German U-ship sinks the Lusitanis resulting in 1,198 civilians,including 128 Americans dying.
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The Battle of Verdun was fought from February 21 to December 19 making it the longest battle fought during the war which resulted in an estimated one million casualties.
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The Battle of Jutaland was fought from May 31 to June 1.It was the only major naval battle fought and there was no clear winner.
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President Woodrow Wilson asks Congress for a declaration of war against Germany.
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The U.S passes the Selective Service Act which empowered the Federal government to draft men to the armed forces.
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Baron von Richthofen or "the Red Baron" is killed during an air-dog fight.
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Germany and the Allies sign a Armistice, ending the war.