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sinking of the Lusitania
The Sussex Pledge
Unrestricted Submarine Warfare
sank by the Germans in 1915
The Zimmerman Note
Germany promised to alter their naval and submarine policy of unrestricted submarine warfare and stop the indiscriminate sinking of non-military ships
US Enters WW1
Germany sinks ships January 31, 1917
In March, 1917 that proposed a military alliance between Germany and Mexico. Mexico going to war with us and in exchange they would get Texas, Arizona and New Mexico back.
U.S enters the war on April 6,1917 due to the submarine warfare of the Germans and in order to fight for democracy
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