introductiontoUSA[29页]

美国概况AnintroductionofAmerica•America•地理•政治•人文历史经济OfficialNameTheUnitedStatesofAmerica（美利坚合众国）Shorten/abbreviatedformsTheUnitedStatesTheU.S.TheU.S.A.NicknameUncleSamUncleSamUncleSamDuringtheWarof1812,SamWilsonwDuringtheWarof1812,SamWilsonwasinthebusinessofslaughteringanasinthebusinessofslaughteringandpackingmeat.Heprovidedlargeshdpackingmeat.Heprovidedlar...