| A | B |
| isolationism | a foreign policy that reduces involvement with other countries |
| neutrality | not choosing sides in a fight |
| Lusitania | 128 Americans died when this British passenger ship was sunk by German submarines in 1915 |
| Treaty of Versailles | An agreement that ended WWI and punished Germany for its role |
| trench warfare | Method of fighting in WWI in which soldiers dug holes in the ground to fight from; many soldiers died of sickness |
| Woodrow Wilson | American president during WWI who created the League of Nations |
| Central Powers | Alliance between Turkey, Austria-Hungary, and Germany |
| Allied Powers | Alliance between France, Italy, Russia, and England, and the US |
| military draft | the practice of requiring people to serve in the armed forces |
| League of Nations | a group that would peacefully settle differences between countries |
| tariffs | taxes on goods brought in from another country (imported) |
| U-boats | German submarines |
| doughboys | name given to American soldiers |