| A | B |
|---|
| Alliance | A formal agreement or treaty between two or more nations to cooperate for specific purposes. |
| Allies (Allied Powers) | The U.S. joined France, Great Britain, and Russia(in 1917) during World War 1 to make up the Allies. |
| 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 avoiding political or economics involvement with other nations. |
| 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. |
| Trench Warfare | Ditches dug by soldiers for protection from enemy attacks. |
| armistice | cease-fire |
| World War I | armistice signed in November 1918 ended this |
| Schlieffen Plan | Germany's military plan, designed to keep Germany from having to fight a two-front war |
| Archduke Franz Ferdinand | his assassination sparked WWI |
| The Eastern Front | Germany's border with Russia |
| The Western Front | Germany's border with France |
| Treaty of Brest-Litovsk | ended the war between Russia and Germany |
| Fourteen Points | Wilson's plan for the postwar world |
| Woodrow Wilson | proposed the League of Nations |
| League of Nations | international organization proposed by Woodrow Wilson |
| Mexico | recipient of the Zimmerman Note |
| Kaiser Wilhelm | German leader before WWI |
| Schileffen Plan | called for the quick defeat of France followed by an attack on Russia |
| Belgium | country invaded by Germany to attack France from the north |
| Triple Entente | Britain, France, Russia |
| Triple Alliance | Germany, Austria-Hungary, Italy |
| Germany | unified by Otto von Bismarck |
| Otto von Bismark | unified Germany |
| trench warfare | primary form of fighting used on the Western Front |
| Central Powers | Germany, Austria-Hungary |
| Great Britain | declared war on Germany after its Belgian invasion |
| Leguae of Nations | "general association of nations" proposed by Woodrow Wilson |
| Treaty of Versailles | ended WWI |
| unrestricted submarine warfare | Germany's naval policy in 1917 |
| Germany | this country used a policy of unrestricted submarine warfare |
| Allied Powers | Great Britain, France, and Russia during the war |
| rationing | system designed to limit purchases of consumer goods |
| propaganda | used to influence pulic opinion |
| Zimmerman Note | German plan to help Mexico regain US territory, pushed the US into WWI |
