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Gavrilo Princip killed Archduke Franz Ferdinand.
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The Kaiser declares unrestricted submarine warfare around the British Isles.
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The British ocean liner Lusitania is torpedoed without warning by a German submarine off the south coast of Ireland.
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British & French vs German Empire. British Commander in Chief Sir Douglas Haig calls a halt to his army's offensive near the Somme River in northwestern France, ending the epic Battle of the Somme after more than four months of bloody conflict.
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President Woodrow Wilson of the United States is re-elected for his second term.
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Woodrow Wilson learned of the telegram’s contents, he proposed to Congress that the U.S. should start arming its ships against possible German attacks.
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Authorized the federal government to raise a national army for the American entry into World War I through the compulsory enlistment of people.
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Driven by the spectacular success of the German U-boat submarines and their attacks on Allied and neutral ships at sea, the British Royal Navy introduces a newly created convoy system, whereby all merchant ships crossing the Atlantic Ocean would travel in groups under the protection of the British navy.
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Prohibited many forms of speech, including "any disloyal, profane, scurrilous, or abusive language about the form of government of the United States
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Vladmir Lenin successfully led a communist revolution, and negotiated a treaty with Germany.
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Killed more people than WWI, at somewhere between 20 and 40 million people.
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Wilson itemized 14 strategies to ensure national security and world peace.
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Expanded on Espionage Act.
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Germany signs armistice with the Allied Powers ending WWI.
