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Archduke Franz Ferdinand of Austria assinated in Sarajevo. Declarations of war begin in the Balkans and spread among European countries.
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Italy declares itself neutral.
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Germany begins to blockade Great Britian.
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German U-boat sinks the ocean liner Lusitania as it sails from New York to Liverpool. Of the 1,195 who died, 123 were Americans.
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Germany launchs the Battle of Verdun.
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Allies launch the Battle of Somme
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President Woodrow Wilson was re-elected on the slogan "He Kept Us Out of War."
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After several provocations, the United States declares war on Germany.
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Congress passes the Selective Service Act requiring all male citizens between ages 21 and 31 to register for the draft.
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The first U.S. troops land in France.
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Russia signs an armistice with Germany, ending fighting on the Eastern Front.
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Woodrow Wilson announces his Fourteen Point plan as "a basis of peace."
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Allies begin their final offensive on the Western Front.
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German signs the armistice ending world war. "I knew all was lost...in these nights hatred grew in me, hatred for those responsible for his deed," a young German corporal later writes. His name: Adolph Hitler.
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World War 1 official ends