| A | B |
|---|
| Love for one's country | Nationalism |
| Archduke Ferdinand | was assassinated by Serbian Nationalists to spark WWI |
| Princip | assassinated the heir to the throne of Austria |
| Militarism | using force to solve problems |
| Germany, Austria-Hungary | The main Central Powers |
| Russia, France and Great Britain | The main Allies |
| Alliances | these caused the war to involve many countries |
| Trench warfare | deadly fighting style during WWI |
| Treaty of Versailles | a major cause of WWII |
| Imperialism | when countries wanted to expand for land and resources |
| U-boats | the most effective weapon for the Germans |
| Lusitania | ship sunk by the Germans that killed 128 Americans |
| Zimmerman note | communication from Germany to Mexico asking Mexico to attack America |
| No man's land | area between the trenches |
| Red Baron | feared German pilot |
