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woodrow wilson takes office
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assassination of archduke franz ferdinand
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america proclaims neutrality in ww1
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the battle of marne
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the sinking of the lusitania
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the battle of verdun
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the sussex incident
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the battle of the somme
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the re-election of president woodrow wilson
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the interception of the zimmermann telegram
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the declaration of new unrestricted submarine warfare by germany
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the united states enters world war one
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select service act
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the espionage act
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the landing of the aef in France
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the begining of the spanish flu
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the 14 points by president willson
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russia pulls out of ww1