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 |