| A | B |
| Militarism | Build up of one's military |
| Alliances | Treaties made between countries to defend each other |
| Imperialism | Dominating a weaker country to get its resources |
| Nationalism | Pride in one's nation |
| Franz Ferdinand | Austria-Hungary duke whose assassination sparked WWI |
| Black Hand | Serbian nationalist group |
| "Total" War | Involving everyone in the war effort |
| Triple Alliance (Central Powers) | Germany, Italy, Austria-Hungary |
| Triple Entente (Allied Powers) | Great Britain, France, Russia |
| Balkans | Powder Keg of Europe |