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Archduke Francis Ferdinand and wife were assissinated.
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Austria-Hungary declares war on Serbia.
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German submarine sank the British passenger ship the Lusitania.
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America declares war on Germany due to Americans being killed on the Lusitania and the continuation of Germany attacking ships.
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Millions of American men registered for service on the first day of the draft for World War I.
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First American troops land in France.
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First three Americans killed in combat during World War I.
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U.S. Congress Passes "Prohibition"
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President Wilson outlines his 14 points for World War I.
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U.S. War Department authorizes chemical warfare services.
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Treaty of Versailles ends World War I.
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U.S. Senate receives peace treaty with Germany
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Women earn the right to vote.