1. 8-3: World War I
While American entry into World War I ensured Allied victory, the failure to conclude a lasting peace left a bitter legacy.

2. War in Europe Causes of the War American Neutrality Militarism
Alliances
Imperialism
Nationalism
War began in 1914
Germany and Austria went to war with Britain, France, and Russia
American Neutrality
There was strong sentiment not to get involved in a European war
American remained neutral for three years

3. American Entry into the War
Submarine Warfare
Woodrow Wilson called for “freedom of the seas”
German submarines sunk the Lusitania
Germany apologized but later resumed the practice of unrestricted submarine warfare

4. American Entry into the War
Ties to Britain
Economic and political relationship
Influenced people to side with the Allied Powers (Britain, France, Russia)
Progressivism
Woodrow Wilson wanted American to help “make the world safe for democracy”

5. U.S. Involvement in World War I
U.S. tips balance of war to Allies
American contributions of soldiers
American resources and war materials
Germany defeated in 1917