| Term | Definition |
| Espionage Act | made it illegal to interfere with the draft |
| Sedition Act | made it illegal to obstruct the sale of Liberty Bonds |
| Liberty Bonds | issued to raise money to loan to the Allies |
| Central Powers | Germany, Austria-Hungary, and the Ottoman Empire |
| Allied Powers | Great Britain, France, and Russia |
| Government Censorship | banning publications that were critical of the war effort |
| Armistice | cease fire to end World War I |
| Treaty of Versailles | punitive treaty to end World War I |
| Fourteen Points | Wilson's plan for a peace among equals |
| War Guilt Clause | blaming Germany; forced to pay $33 billion in reparations |
| League of Nations | proposal to have nations to police the world |
| Why the U.S. rejected Versailles... | U.S. strongly opposed foreign alliances and return to isolationism |
| Convoy system | devised to keep Germans from sinking U.S. ships |
| Trench Warfare | the reason for the great amount of casualties in the war. |