| A | B |
| Alliances | These divided Europe into competing camps |
| Militarism | This is building up an army and being prepared for war |
| Archduke Ferdinand | His assassination sparked WWI |
| Austria-Hungary | Archduke Ferdinand was heir to this throne |
| 1917 | Russia left the war and US entered during this year |
| Woodrow Wilson | He was the US President during WWI |
| Kaiser Wilhelm II | He was Germany's ruler during WWI |
| Russian Imperial | One of the empires which ended as a result of WWI |
| Treaty of Versailles | Peace Treaty that ended WWI |
| War Guilt Clause | This forced Germany to accept blame for WWI |
| Reparations | Money paid to the victorious nations as compensation |
| German military | This was limited by the Treaty of Versailles |
| Japan | Russia lost a war to this country in 1905 |
| Peasants | This group of people was largely landless at the beginning of the Russian Rev. |
| Czar Nicholas II | This man was considered to be incompetent, leading to his assassination |
| Russia | This nation experienced military defeats and high casualties in WWI |
| Bolsheviks | This group seized power during the Russian Revolution |
| Vladimir Lenin | This man became Russia's leader during the Russian Rev. |
| New Economic Policy | Limited form of capitalism, allowed peasants some rights |
| Joseph Stalin | He suceeded Lenin |