| A | B |
|---|
| Alliance | A formal agreement or treaty between two or more nations to cooperate for specific purposes |
| Allied Powers | The U.S. joined France, Great Britain, and Russia(in 1917) during World War 1 to make up the Allied Powers. |
| Archduke Franz Ferdinand | Heir to the throne of Austria-Hungary; his assassination was the spark that began World War 1 in Europe. |
| Central Powers | Germany, Austria-Hungary, Turkey, and Bulgaria made up the Central Powers during World War 1. |
| Isolationism | A national policy describing America's policy of remaining neutral for political or economics involvement with other nations at war. |
| League of Nations | A world organization formed in 1920 to promote international cooperation and peace; first proposed by President Woodrow Wilson, although the U.S. U.S. never joined. |
| Lusitania | Name of an ocean liner sunk by a German submarine in 1915 that helped lead to U.S. intervention in World War 1. |
| Neutrality | A state of being neutral, on neither side in a quarrel or fight, especially nonparticipation in war. |
| Treaty of Versailles | Treaty signed at Versailles, France on June 28, 1919 that officially ended World War 1 and punished Germany with large fines and not allowing them to rebuild their army. |
| Trench Warfare | Ditches dug by soldiers for protection from enemy attacks. |
| Nationalism | A love of country and desire to have one's country free from control |
| Woodrow Wilson | President during WW1 who promised to keep the US out of war |
| New Technology for WW1 | Airplanes, submarines, machine guns, bombs, tanks, and mustard gas |
| Women | Took over factory and farm jobs. They were ambulance drivers, nurses, clerks, and telegraph operators. |
| Zimmerman Note | Telegram intercepted that suggested an alliance between Germany and Mexico. |
| No-Man's Land | The land between trenches that neither side controlled. |
| November 11, 1918 | WW1 Date of Surrender now remembered as Veteran's Day |
| Victory Gardens | Town parks planted with food crops to help feed people at home and overseas. |
| Eastern Front | Area of fighting: Central and Eastern Europe |
| Uncle Sam | Symbol used to encourage people to join the US army |
| Western Front | Area of fighting: Belgium and France |
| World War I | First known as "The Great War" and "The War to End all Wars" |
| U-boat | German submarine |
| War Bond | The government sold these to make money for the war. The government borrowed the money and then paid it back with interest. |
| Imperialism | When one country takes over another country |
