| A | B |
| nationalism | devotion to the interests or culture of one's own country |
| militarism | development of armed forces and their use as a tool of diplomacy |
| Allies | France, Britain and Russia (later Italy and the United States) |
| Central Powers | Germany, Austria-Hungary, the Ottoman Empire, Italy (later changed sides) |
| Archduke Ferdinand | heir to the Austrian throne, assassinated in Sarajevo |
| no man's land | barren expanse of land between trench lines |
| trench warfare | describes the bloody, close quarters combat on the Western Front in World War I |
| Lusitania | passenger liner sunk by a german U-boat, caused the US to enter the war |
| U-boat | a German submarine |
| Zimmerman note | telegram from the German foriegn minister to Mexico, an attempt to get Mexico in the war against the United States |
| Eddie Rickenbacker | famous American fighter ace of WWI |
| Selective Service Act | established a military draft in the United States |
| convoy system | heavily guarded groups of merchant ships crossing the Atlantic from the US to Europe |
| American Expeditionary Force | American force that went to Europe in 1917 |
| General John J. Pershing | commander of the AEF |
| Alvin York | killed 25 Germans and captured 132 prisoners, won the Medal of Honor |
| conscientious objector | person who opposes war on religious or moral grounds |
| armistice | truce that ends fighting |
| November 11, 1918 | Armistice Day |
| War Industries Board | federal agency set up to boost wartime production |
| Bernard M. Baruch | leader of the WIB |
| propaganda | biased communication designed to influence people's thoughts or beliefs |
| George Creel | head of the Committee on Public Information |
| Committee on Public Information | the nation's first propaganda agency |
| Espionage and Sedition Acts | law that limited speech critical of the war |
| Great Migration | movement of hundreds of thousands of African Americans to northern cities |
| Flu Epidemic of 1918 | killed between 20 and 40 million people |
| Schenck v. United States | upheld the legality of the Espionage and Sedition Act |
| Fourteen Points | Woodrow Wilson's peace plan |
| League of Nations | international organization designed to address diplomatic crises |
| Georges Clemenceau | French Premier during WWI |
| David Lloyd George | British Prime Minister during WWI |
| Woodrow Wilson | American President during WWI |
| Treaty of Versailles | ended WWI and punished Germany |
| reparations | war damages |
| war-guilt clause | required Germany to take responsibility for WWI |
| Henry Cabot Lodge | US Senator who opposed Wilson's fourteen points and the League of Nations |