| A | B |
| Nationalism | devotion to one's nation |
| Militarism | the glorification of the military |
| Prince Francis Ferdinand | his assisination led to WWI |
| Western Front | the battle between the Allies and Central Powers in western Europe during World War I |
| Trench Warfare | shallow trenches to protect from enemy fire |
| casualty | soldiers killed, wounded and missing |
| Contraband | during wartime, goods such as weapons, and other articles used to fight a war that may be legally confiscated. |
| U-boat | German submarine |
| Lusitania | British passenger liner sunk by a German U-boat during World War I |
| Zimmerman Note | a telegram written from Germany proposing an alliance between Germany and Mexico and against the U.S. during WWI |