1. The United States Declares War
Chapter 10
Section 2

2. Submarine Warfare New Weapon was the German Submarine=U-Boat
Changed the rules of navel warfare because it remained hidden and fired without warning
Germans aimed to attack ships carrying supplies/weapons to the Allies
US thought submarine warfare was barbaric and uncivilized
Sinking of the Lusitania
Sussex Pledge: Germans promised to warn ships before attacking
Did not stop Germans from sinking ships
Wilson frustrated because U.S. still a neutral country
Gave large loans to Allies

3. US Moving Toward War Wilson re-elected in 1916
Germans violated the Sussex Pledge and resumed unrestricted submarine warfare
U.S. broke off diplomatic ties with the Germans
Zimmerman Note/Telegram
Russian Revolution
US more comfortable with joining Allies since Russia’s czar was ousted
German sank American ships in March 1917
U.S. declared war on Germany in April 1917
Wilson said”…the world must be made safe for democracy.”

4. Michigan Department of Education High School Content Expectations U. S
Michigan Department of Education High School Content Expectations U.S. History and Geography
6.2.2