| A | B |
| Zimmerman Telegram | Cause for U.S. to distrust Germany |
| Assasination of the Archduke | Spark that led to the War |
| Lusitania | passenger ship torpedoed by German U-Boats |
| Liberty Bonds | U.S. govt sold these to raise money for war |
| Trench Warfare | a network of dug out lines from which soldiers fired upon the enemy |
| Nationalism | pride for having your own nation |
| Armistice | a written agreement to end all fighting |
| Imperialism | whne one nation expands its' size or power through taking over another |
| Pacifist | person who opposes war |
| Selective service Act | required men to register for war draft |
| Russian Revolution | reason for Russia to drop out of war |
| 14 Points | Wilson's outline for peace |
| Propaganda | the spread of ideas through emotional words or images |
| Militarism | a policy of building up strong military forces to prepare for war |
| Big Four | Italy, France, England, U.S.A. |