Why the U.S. A. joined WWI
1. The sinking of the Lusitania - A German U-boat torpedoed a British passenger ship, killing 128 Americans
2. Unrestricted Submarine Warfare -President Wilson warns Germany against continuing unrestricted submarine attacks (due to deaths of Americans
3. The Sussex Pledge - to keep the U.S. from entering war, Germany pledges to stop attacking U.S. ships
4. The Zimmerman Note - a decoded telegram sent from Germany to Mexico. Stated that if Mexico declares war on the U.S., Germany would allied with Mexico and provide them with "financial support and ... to reconquer lost territory..."
5. US Enters WW1 - as a result of the sinking of Lusitania, Unrestricted submarine warfare, the Sussex Pledge, and the Zimmerman Note the United States joined the war.
Description for each in description box
Why the U.S. entered WWI
The sinking of the Lusitania
Unrestricted Submarine Warfare
Dear United States, We, Germany, promise to not attack you again. Sorry - Germany
The Zimmerman Note
Dear Mexico. If you declare war on the U.S.A. we will help you get land and other things :) from Zimmerman P.S. Germany will not forget you
The U.S. enters WWI in April 6, 1917
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