President Wilson's proposed covenant in the Treaty of Versailles that would have compelled members of the League of Nations to go to war to protect member nations in the event of unprovoked attack
government agency responsible for convincing the American public to support the war and everything that U.S. involvement entailed for Americans, including the draft
act of Congress that made it illegal to interfere with or impede the success of the U.S. military or to promote or enable enemies of the United States
chain reaction of events in July 1914 following the June assassination of Archduke Ferdinand and his wife, leading up to the declaration of war that launched World War I
British passenger ship sunk by a German U-boat during its transatlantic voyage from Liverpool, England, to New York City in May 1915. Of the 1,198 passengers killed, 128 were Americans.
act of Congress criminalizing speech that maligned the U.S. government, Constitution, military, and flag
formal agreement worked out at the Paris Peace Conference in 1919 that officially ended World War I
German submarine. The term is the anglicized version of the German word U-boot, or Unterseeboot, which in translation means "undersea boat."
military tactic in which submarines fire upon marine vessels without warning with the intention of sinking them
telegram sent from Germany to Mexico that offered Mexico assistance in regaining territory lost to the United States in exchange for support during the war