| A | B |
| Allies | Great Britain, France, Russia, later the U.S. |
| armistice | agreement to stop fighting until a peace treaty is signed |
| alliance | an agreement among nations to help each other out in time of war; cause of war |
| Central Powers | Germany, Austria-Hungary, Bulgaria |
| disarmament | reduction in the weapons a country has available |
| doughboy | name for a U.S. soldier in W.W. 1 |
| embargo | government order forbiding movement of ships in or out of a port |
| front | line of battle where fighting is taking place |
| Fourteen Points | President Wilson's plan for the world after W.W 1 |
| imperialism | policy of territorial expansion, one country taking over others to get powerful, cause of war |
| isolationism | policy by which a nation seeks to avoid being involved in other nation's problems |
| international law | rules agreed upon by many nations |
| League of Nations | organized at end of W.W. 1 as a peacekeeping group; U.S. never joined |
| Liberty Bonds | sold in U.S. to help pay for W.W. 1 |
| militarism | increase in the military of a country; strong army, navy; cause of war |
| nationalism | extreme pride in one's country; cause of war |
| propaganda | sjpreading of ideas to help a cause; often speeches or posters |
| neutrality | policy of not taking sides |
| reparations | payments made by defeated nations to repair war damages |
| submarine warfare | used in W.W. 1 by Germany |