| A | B |
|---|
| The side the U.S. was on, included Great Britain and France | Allies |
| To not take sides in a conflict | neutral |
| Underwater boats that can fire torpedoes | submarines |
| President Wilson's plan to bring about a lasting peace | Fourteen Points |
| Countries promise to defend each other in the event of an attack | alliances |
| The side we were fighting against, includes Germany | Central Powers |
| When a country tries to keep itself separate from world affairs | isolationism |
| British passenger ship sunk by a German U-boat, killing more than 1,000 people | Lusitania |
| The peace treaty with Germany at the end of WWI | Treaty of Versaille |
| New ways of warfare included | trench warfare, flame throwers, tanks, planes etc. |
