1. The war to end all wars World War I

2. Main Causes for the war Militarism: Build up of army and weapons of many European powers Allies/Assassination: Triple Entente and Triple Alliance The Archduke Ferdinand killed by the black hand Imperialism: The spread of empires just prior to the turn of the 20 th century Nationalism: Countries began to fight for independence (Serbia and Austria in the Balkans)

3. The Spark Gavrilo Princip

4. Schlieffen Plan Germany invades Belgium hoping to destroy France quickly so they can shift their forces to Russia. Battle of the Marne prevents a quick victory

5. Battle of the Marne and Trench Warfare Marne: Sept 1914 French vs. Germans Changes in Warfare No Mans Land Barbed Wire Chemical Warfare Machine Gun

6. Horrors of Trench Warfare

7. Battles of WWI Battle of the Verdun Feb-July of 1916 Battle of the Somme July-Nov of 1916 Longest battle of the War 1.2 million killed over 7 miles of land

8. To join or not to join After a decade of fighting to maintain a shrinking empire America opts to stay out of war. German immigrants wanted to join Central along with Irish immigrants British immigrants side with allied forces and we have more economic interests there William Jennings Bryan says they should remain Pacifists

9. What do you think? At what point do you think that America should become involved with foreign affairs? What would have to happen for you to justify sending our youth to fight oversees? Is there ever a just time?

10. America gets involved British Blockade: Starves 750,000 Germans German U-boats The sinking of the Lusitania kills 1198 people including 128 Americans May 7, 1915