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  A teenage Serbian nationalist gunned down Ferdinand and his wife as their motorcade moved through the streets of Sarajevo.
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  The assassination of Archduke Franz Ferdinand started the Great War
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  submarine warfare against the UK of Great Britain and Ireland and the British Royal Navy blockaded Germany.
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  He was a democratic candidate and was reelected beating the republican candidate by 600,000 votes because of war
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  a battle of the First World War fought by the British and French against the German
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  instructed the ambassador, Johann von Bernstorff to offer significant financial aid to Mexico if it agreed to enter any future U.S. German conflict
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  in order to make the world safe for democracy
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  authorized by federal government to raise a national army for the American entry in world war I through enlistment of people
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  all merchant ships passing through the Atlantic Ocean would travel in groups under protection of the British
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  Passed shortly after the U.S. entered world war I, saying they had to keep silent about the war or it was considered a crime.
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  Vladimir Lenin wanted to focus on building up a communist state and pull Russia out of the war
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  deadly influenza pandemic
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  Germany uses U-Boats to sink all ships
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  a statement of principles for peace that was to be used for peace negotiations in order to end World War I.
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  extension of Espionage act covering broader range of offenses.. speech and expression of opinion that cast government or war effort in a negative light
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  the agreement that ended the fighting on the Western Front.