| A | B |
| nationalist group | groups of people who support nationalism |
| militarism | fascination with the glory of war adn the power of the military |
| arms race | building huge armies and navies to outdo rival nations and protect world interests |
| alliance | agreements among competing blocs nations to help each other if war broke out |
| mobilization | the assembly and movement of troops |
| entente | an understanding between nations |
| balance of power | a situation in which each side has equal power |
| Central Powers | Germany Austria-Hungary & the Ottoman Empire were called this during World War I |
| Allied Powers | France, Great Britain, Italy and the United States were called this during World War I |
| neutrality | a policy of not taking sides |
| front | a line along which opposing armies face each other |
| trench warfare | soldiers fought from two lines of ditches which soon reached from the English Channel into Switzerland |
| civilian | nonmilitary citizens |
| propaganda | information designed to influence public opinions |
| soviets | committees in Russia formed by workers |
| Bolsheviks | the most radical of the socialist groups in Russia |
| armistice | cease fire |
| Big Four | leaders from the United States, Great Britain, Italy & France |
| compromise | settlements in which each side gives up some of its demands to reach an agreement |
| Fourteen Points | President Wilson's peace plan |
| reparation | payments for the costs of war |
| League of Nations | a peacekeeping organization created after World War I in the Treaty of Versailles |
| Treaty of Versailles | treaty between the Allies and Germany after World War I which got its name from the place where it was signed. |
| mandate | under this system, the League of Nations governed each territory but allowed a member territory to run it |
| Balfour Declaration | issued by Great Britain and promised Jews a homeland in Palestine |