| A | B |
| militarism | the belief that a nation needs a large military for the glorification of the country |
| Central Powers | an alliance of Austria-Hungary, the Ottoman Empire, and Bulgaria during WW1 |
| Allies | an alliance of Russia, France, Great Britain, Italy and later the United States during WW1 |
| trench warfare | type of warfare where soldiers fire on one another from opposing lines of dugout trenches |
| U-boat | submarines that the Germans used to block trade during WW1 |
| Woodrow Wilson | President of the US during WW1 who announced a policy of neutrality when the war started |
| neutrality | refusing to take sides in a war |
| Zimmerman telegram | 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 Texas, New Mexico, and Arizona if the US entered WW1 |
| John J. Pershing | General in WW1 who led the American Expeditionary Force |
| American Expeditionary Force | During WW1, troops who were led by General John J. Pershing |
| Alvin York | American soldier who at first refused to bear arms and then went on to be a hero attacking German machine gunners in Oct. 1918 |
| armistice | a halt in fighting that allows peace talks to begin |
| war bonds | a low-interest loan by civilians to the government, meant to be repaid in a number of years |
| propaganda | an opinion expressed for the purpose of influencing the actions of others |
| Alliance | A formal agreement or treaty between two or more nations to cooperate for specific purposes. |
| Archduke Franz Ferdinand | Heir to the throne of Austria-Hungary; his assassination was the spark that began World War 1 in Europe. |
| Isolationism | A national policy describing America's policy of avoiding political or economics involvement with other nations. |
| Lusitania | Name of an ocean liner sunk by a German submarine in 1915 that helped lead to U.S. intervention in World War 1. |
| epidemic | rapid spread of a contagious disease |
| abdicate | give up power |