| A | B |
| League of Nations | a group of nations to settle disputes and maintain peace (part of the 14 points) |
| Trench warfare | military strategy of defending a position by fighting from ditches |
| 14 points | a peace plan made by Woodrow Wilson to create a system to avoid future wars |
| Nationalism | a belief that a specific nation, language, or culture is superior to others |
| No Man's Land | the strip of land between the two trenches during WWI |
| Armstice | a truce between warring groups |
| Sussex Pledge | the promise from Germany not to sink merchant ships without warning |
| Franz Ferdinand | The Archduke of Austris-Hungary that was assasination by a Serbian nationalist |
| U-boats | Germany's large fleet of submarines |
| Central Powers | alliance between Austria-Hungary, Germany, Bulgaria, and Turkey |
| Allied Powers | an alliance between Great Britain, France, Russia, Serbia, Belgium, and later the US |
| Stalemate | a situation which niether side can win with a decisive victory |
| The Lusitania | British passenger ship sunk by a German U-boat |
| Zimmerman Note | a telegram sent to Mexico from Germany proposing an alliance aganist the US |
| Treaty of Versailles | The final peace agreement for WWI |
| Reparations | payments for the damages and expenses brought on by war |
| Liberty bonds | money from the sale of these was used to help fund the Allies during WWI |
| Communists | people who led the revolution in Russia who seek the equal distribution of wealth |
| Militarism | the policy of agressive military prepardeness |
| Selective Service Act | the registration and draft of men during war time |