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  Woodrow Wilson declared that the Untied States would remain netural during the war.
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  A German U-boat sank the Lusitania killing American passangers.
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  Germany pledged to the Untied States that they woukd not sink any non-military boats.
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  A letter that Germnay sent to Mexico telling them they would give them land if they went to war with the U.S. (Written by Artur Zimmerman)
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  Germany annouces that they will continue warfare on non-military ships.
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  Germany targeted and sunk American ships.
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  Presidant Wilson declares war on Germany.
