1. U.S. Enters World War 1

2. Major battles Battle of Tannerberg (Aug 1914)- Russian advance into Germany Halted on country borders Battle of Gallipoli (April 1915)- Allied forces defeated by Ottomans trying to establish a supply route to Russia Battle of Ypres (May, 1915)- Germans first use chemical weapons Battle of the Somme (July, 1916)- first use of tanks by the British

3. Rising tension in the U.S. Germany used unrestricted submarine warfare- sunk both passenger and supply ships. Including U.S. supply ships

4. The Lusitania September 1915, Germans sunk a British passenger ship called the Lusitania 1,100 civilians died 100 of them were U.S. citizens. Germans temporarily stop their unrestricted submarine warfare

5. reasons U.S. enter the War U.S. asked Germans to stop sinking any and all ships in the Atlantic. Zimmerman Telegram - Note sent by leader of Germany to Mexico, told Mexico to invade U.S., and regain lost territory Intercepted by U.S., angers American people

6. U.S. enters the War In 1917, Germans return to unrestricted submarine warfare April 1917, U.S. enter the war Tilts the power to the side of the Allies U.S. soldiers known as Doughboys

7. Total War Complete mobilization of troops War bonds- money given for war, gov’t will give money back with interest later

8. Woodrow Wilson President of the United States during WW1 Told all citizens they were responsible for helping the war effort. Promoted Nationalism Women went to work in factories while husbands fought

9. End of World War 1 U.S. entering added a psychological blow to the Germans. Erich Ludendorff (German General) attempted one final push to defeat the Allies and the U.S  it fails Germany was forced to sign an Armistice (surrender) on November 11 th 1918

10. Treaty of Versailles Final Peace treaty of the War War Guilt clause- Germany would pay all war debts back. Owed 33 billion. Divided Europe into the new land map. Created the League of Nations to prevent future wars  it fails, U.S. doesn’t sign it