World War I (1910-1920) 255. Lusitania: British passenger liner secretly carrying ammunition sunk by German u-boat, included American passengers 256. Zimmerman Note: intercepted by Britain; Germany proposed alliance with Mexico, using bribe of return of TX, NM, and AZ; Japan included in alliance 257. Unrestricted submarine warfare: Germany announced that it would sink all (including American) ships, attempt to involve U.S.in war? 258. Creel Committee: Committee on Public Information; aimed to sell America and the world on Wilson?s war goals; propaganda, censorship, ?four-minute men? speeches, ?Liberty Leagues? (spy on community) 259. War Industries Board: attempted to centralize production of war?materials; ineffective due to American desire for laissez-faire government