| A | B |
| Francis Ferdinand | Archduke of Austria-Hungary that was assassinated to start WWI |
| militarism | pride in or glorifying the military |
| alliance | a union between people, groups, countries, etc. : a relationship in which people agree to work together |
| mobilization | Getting ready for war |
| Central Power Countries | Germany, Austria-Hungary, Ottoman Empire |
| Allied Power Countries | Britain, France, Russia, United States, Serbia |
| Stalemate | when a battle or war becomes equal and neither side has an advantage |
| neutrality | America’s policy before entering WWI |
| preparedness | Movement to get ready for the war before America actually declared war |
| Great War | The original name for WWI. It was thought to be the war to end all wars. |
| U-Boat | submarine |
| Lusitania | British passenger ship carrying American and British civilians that was sunk by a German u-boat |
| Sussex Pledge | German promise to the United States to stop sinking unarmed ships |
| Zimmerman Note (Telegram) | telegram from Germany to Mexico to try to persuade Mexico to attack the US in return for land if Germany won the war |
| April 6, 1917 | The United States declared war on Germany |
| Western Front | main battle line between Allies and Central Powers |
| Casualties | soldiers who are killed, wounded, or missing |
| Selective service act | the law that required men to register for the military draft |
| War Industries Board | Regulated all businesses during war time. It determined what to make, where products went, and how much they would cost. |
| Committee on Public Information | government organization to educate the public on the causes and nature of the war |
| Conscientious objector | people who decided not to take part in the war due to moral or religious beliefs |
| Sedition Act | law that allowed Congress to limit free speech about the government, Constitution, or military |
| Schenck v. United States | Court case that ruled that there are times when keeping public order over rules the right to 1st Amendment right to speech. |
| Suffrage | The right to vote, earned by women after the participation in the war effort |
| Great Migration | the movement of African Americans to the North for better job opportunities and less violence |
| 369th Infantry (Harlem Hell Fighters) | Black regiment from New York that fought alongside the French because they could not fight for America |
| Convoy system | battle ships escorting merchant ships for protection |
| November 11, 1918 | Armistice day. The day that WWI unofficially ended |
| Wilson’s 14 Points | President Wilson's ideas for how to create a lasting peace in Europe |
| Self-determination | the ability for a group of people to have their own country and choose their own government |
| League of Nations | Organization of countries put together to help prevent future war through the use of diplomacy. Later evolved into the United Nations |
| reparations | financial payments for war damages |
| Treaty of Versailles (Versailles Treaty) | Ended WWI and was a leading cause of WWII |