| A | B |
| Entente | a nonbinding agreement to follow common policies. |
| Militarism | glorification of the military. |
| Alsace and Lorraine | provinces located along the French-German border. |
| Ultimaturn | final set of demands. |
| Mobilize | to prepare military forces for war. |
| Neutrality | a policy of supporting neither side in a war. |
| Stalemate | a deadlock in which neither side is able to defeat the other. |
| Zeppelin | large, gas-filled balloon. |
| U-Boat | German submarine. |
| Convoy | group of merchant ships protected by warships. |
| Dardanelles | strait connecting the Black Sea and the Mediterranean Sea. |
| T.E. Lawrence | better known as Lawrence of Arabia; sent to support the Arab revolt; led guerrilla raids against the Turks. |
| Total War | channeling of a nation's entire resources into a war effort. |
| Conscription | "the draft," which required all young men to be ready for military or other services. |
| Contraband | military supplies and raw materials needed to make military supplies, but not items such as food an clothing. |
| Lusitania | British ocean liner whose sinking by a German U-boat led to temporary halting of unrestricted submarine warfare during World War I. |
| Propaganda | spreading of ideas to promote a cause or to damage an opposing cause. |
| Atrocity | horrible act against innocent people. |
| Fourteen Points | Wilson issued a list of terms for resolving WWI and future wars. |
| Self-Determination | right of people to choose their own form of government. |
| Armistice | an agreement to end fighting . |
| Pandemic | the spread of a disease across a large area. |
| Reparations | payments for war damage. |
| Radicals | people who favor extreme change. |
| Collective Security | system in which a group of nations acts as one to preserve the peace of all. |
| Mandate | after WWI, a territory that was administered by a Western power. |
| Proletariat | working class. |
| Soviet | Russian council of workers and soldiers. |
| Cheka | Communist secret police force set up during the Russian civil war. |
| Commissar | communist party official assigned to the army to teach principles and ensure party loyalty. |