| A | B |
| Schlieffen Plan | Invasion of Belgium |
| German extreme nationalism | Pan-Germanism |
 | Anglo-German rivalries in building dreadnoughts |
| Triple Alliance | Germany, Austria-Hungary, Italy |
 | Assassination of Archduke Ferdinand |
| Austria-Hungary annexed this state | Bosnia |
| Russian extreme nationalism | Pan-Slavism |
| Triple Entente | Britain, France, Russia |
| Lusitania | American entry into World War I |
| Czarist government was overthrown | Russian withdrawal from World War I |