| A | B |
|---|
| war-guilt clause | a provision in the Treaty of Versailles by which Germany acknowledged that it alone was responsible for WWI |
| Allies | in WWI, the group of nations originally consisting of Great Britain, France, and Russia, and later joined by the US, Italy and othersx |
| Central Powers | the group of nations led by Germany, Austria-Hungary, and the Ottoman Empire in WWI |
| convoy system | the protection of merchant ships from U-boat attacks by having them travel in large groups escorted by warships |
| armistice | a truce, or agreement to end an armed conflict |
| propaganda | a kind of biased communication designed to influence people's thoughts and actions |
| reparations | the compensation paid by a defeated nation for the damage or injury it inflicted during a war |
| "No man's land" | an unoccupied region between opposing armies |
| conscientious objector | a person who refuses, on moral grounds, to participate in warfare |
| nationalism | a devotion to the interests and culture of one's nation |
| militarism | the policy of building up armed forces in aggressive preparedness for war and their use as a tool of diplomacy |
| Lusitania | a British passenger ship that was sunk by a German U-boat in 1915 |
| Zimmerman note | a message sent in 1917 by the German foreign minister to the German ambassador in Mexico, proposing a German-Mexican alliance and promising to help Mexico regain TX, NM, and AZ if the US entered WWI |
| Great Migration | the large-scale movement of African Americans from the South to Northern cities in the early 20th century |
| trench warfare | military operations in which the opposing forces attack and counterattack from systems of fortified ditches rather than an open battlefied |
| American Expeditionalry Force | US forces, led by General Pershing, who fought with the Allies in WWI |
| Selective Service Act | a law, enacted in 1917, that required men to register for military service |
| War Industries Board | an agency established during WWi to increase efficiency and discourage waste in war-related industires |
| Espionage and Sedition Acts | laws, enacted in 1917 and 1918, that imposed harsh penalties on anyone interfering with or speaking against US participation in WWI |
| Fourteen points | the principles making up President Wilson's plan for peace following WWI |
| Treaty of Versailles | the 1919 peace treaty at the end of WWI that established new nations. borders, and war reparations |
| League of Nations | an association of nations exstablished in 1920 to promote international cooperation and peace |
