| A | B |
| Cheka | Communist secret police that eliminated opposition to Lenin and communist dictatorship |
| New Economic Policy | Russian policy under Lenin that allowed small businesses and farms to practice capitalism |
| Balkans | Peninsula in southeast Europe that was a source of instability in the years leading up to World War I |
| Bolsheviks | Russian communists led by Vladimir Lenin that led a revolution overthrowing the provisional government; killed tsar Nicholas II and family |
| Schlieffen | German war plan that set stage for two front war against France and Russia |
| Hitler | Nazi dictator that overthrew Weimar republic, established totalitarian fascist state, and started World War II in Europe |
| Stalin | Communist dictator that took control of Soviet Union after death of Lenin; forced industrialization, purged opponents, collectivized agriculture |
| Weimar | Democratic republic established in Germany after World War I; struggled with hyperinflation in 1920's and Great Depression in 1930's; overthrown by Nazis |
| Mussolini | Fascist dictator that established totalitarian regime in Italy |
| Franco | Fascist dictator that overthrew Spain's government in 1930's in the Spanish Civil War |
| Versailles | Treaty that ended World War I; redrew map of Europe, established League of Nations, set up mandate system where British and French took over German and Ottoman empire territory |
| Appeasement | Strategy employed by Britain and France to allow Germany to violate provisions of the Versailles treaty in order to avoid a second world war |
| Holocaust | Genocide by Nazi Germany that resulted in the deaths of millions of civilian Jews, Slavs, disabled persons, Roma, homosexuals, and others |
| Blitzkrieg | Tactic employed by German military to wage "lightning war" by using tanks and bombers to rapidly destroy opposing armies |
| Axis | Alliance between Germany, Italy, and Japan during World War II |
| Nuremberg | Location of trials of Nazi leaders after World War II |
| Potsdam | Suburb of Berlin where post-WWII negotiations took place between USA, USSR, and Britain |
| Winston Churchill | Prime Minister of Britain during World War II |
| Nicholas II | Tsar of Russia overthrown during World War I |
| Alliance System | Triple Alliance and Triple Entente groups of rival powers before World War I |
| Allied Powers (WWII) | USA, Soviet Union, Britain |
| Vichy | Name of French collaborator state established after Germany defeated France in WWII |
| Charles de Gaulle | leader of French resistance in WWII who became president of France after WWII |
| Vladimir Lenin | Bolshevik Communist leader of Russian Revolution and Soviet Union |