| A | B |
| Nationalism | Sense of extreme pride or loyalty to a nation |
| Imperialism | Quest for colonial empires. |
| Allied Powers | France, Great Britain, Russia, Italy, United States |
| Central Powers | Germany, Austria-Hungary, Ottoman Empire (Austria-Hungary) WWI alliance |
| Triple Alliance | Germany, Austria-Hungary and Italy alliance before WWI |
| Trench Warfare | Opposing armies fighting from behind fixed fortifications |
| Treaty of Versailles | Agreement ending World War I |
| Triple Entente | Military alliance formed by Great Britain, France, and Russia before WWI |
| Lusitania | British passenger liner Torpedoed by German U-Boat |
| Archduke Ferdinand | Heir to the Austro-Hungarian Throne |
| Gavrilo Princip | Serbian nationalist who killed Archduke Ferdinand |
| Militarism | Glorification of armed strength by a nation |
| No-man's Land | Area between enemy trenches. |
| Alliances | Countries siding with other countries for military strength. |
| 1917 | Year that the United States enters World War I |
| 1914 | The year that the Great War started in Europe |
| Woodrow Wilson | Elected President in 1916 and wrote "14 Points" and founded the League of Nations |
| Archduke Francis Ferdinand | his death "sparked" World War I |
| Imperialism | when a strong nation takes over a weaker nation |
| Militarism | build up of the military/preparation for war |
| Nationalism | pride in your own culture/desire for statehood |
| Allies | Britain, France,Russia, Serbia |
| U-boat | Submarine--German |
| Zimmerman note | Germany offered to give U.S. land to Mexico for help in attacking U.S. |
| Lusitania | British ship, sunk in war |
| No-Man's Land | empty land between armies |
| Stalemate | no movement possible by either side |
| Alliances | agreements of support between countries |
| Nicholas II | last Tsar/Czar of Russia |
| 14 points | Wilson's plan for future peace |
| Western Front | Battle lines in France against Germany |
| MAIN | militarism, alliances, imperialism, nationalism |