1. Reasons U.S. Enters War: The End of Neutrality
Mr. Doherty / Mrs. T

2. Unrestricted Submarine Warfare
Germany claimed the waters around Great Britain a “WAR ZONE”
Set up a blockade in these waters
Warns US Ships to stay out of these waters

5. Sinking of Lusitania
Germany warns neutral countries to steer clear of Great Britain
May 7, 1915, the Lusitania , a British passenger ship is torpedoed.
1,200 people die (128 Americans)
President Wilson *threatened to break off diplomatic relations with Germany*

9. Zimmerman Telegram
Arthur Zimmerman, Germany’s foreign secretary, had sent a secret note to the German minister in Mexico.
The telegram urged Mexico to attack the United States if the U.S. declared war on Germany.
In return, Germany promised to help Mexico win back their territories in the American Southwest.

11. Russian Revolution
In 1917, as a result of causalities in war and hunger at home, the Czar (Russian emperor) was forced to step down.
Revolutionaries set up a democratic government.
Pres. Woodrow Wilson believed in democracy, this influenced him to support the Allied cause.

12. Declaration of War
April 2, 1917 President Wilson asks Congress to declare war.
Congress voted for war 455 to 56.