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Archduke Franz Ferdinand of Austria and his wife Sophie were assassinated by a Bosnian Serb nationalist during an official visit to the Bosnian capital of Sarajevo.
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President Woodrow Wilson declared that the United States would remain “impartial in thought as well as in action.”
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A German submarine torpedoed and sank the Lusitania killing 1,195 men,women and children, including 123 Americans.
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a secret diplomatic communication issued from the German Foreign Office that proposed a military alliance between Germany and Mexico.
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President Woodrow Wilson went before a joint session of Congress to request a declaration of war against Germany.
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CPI established to mobilize public opinion behind World War I.
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The act required all men in the U.S. between the ages of 21 and 30 to register for military service.
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The AEF did not fully participate at the front until October, when the First Division, one of the best-trained divisions of the AEF, entered the trenches at Nancy, France.
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A act that prohibited obtaining information, recording pictures, or copying descriptions of any information relating to the national defense.
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President Wilson laid down fourteen points as the “only possible” program for world peace.
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The Second Battle of the Marne was the last major German offensive on the Western Front during the First World War.
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The purpose of the meeting was to establish the terms of the peace after World War.
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The Senate rejected the Treaty of Versailles because of the objections to the League of Nations and Wilson's unwillingness to negotiate.
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the French delegation signed the Armistice agreement imposed by Germany.