美国历史与文化.ppt

文档介绍：monlyreferredtoastheUnitedStates,.,theUSA,orAmerica),whereitsforty-eightcontiguousstatesandWashington,.,thecapitaldistrict,liebetweenthePacificandAtlanticOceans,,(群岛)inthemid-,orinsular(海岛的)areas,(²)andwithabout305millionpeople,theUnitedStatesisthethirdorfourthlargestcountrybytotalarea,'smostethnicallydiverseandmulticulturalnations,theproductoflarge-,withanestimated2008grossdomesticproduct(GDP)ofUS$(23%oftheworldtotalbasedonnominalGDPandalmost21%atpurchasingpowerparity).拇桩陛枢最呻钦劝滴记***,1776,theyissuedtheDeclarationofIndependence,,,1787;,,theUnitedStatesacquiredlandfromFrance,Spain,theUnitedKingdom,Mexico,andRussia,