搜索
TheUnitedStatesofAmerica•LocatedinthecentralofNorthAmerica(exceptAlaska,Hawaii)•North:Canada•South:Mexico,theGulfofMexico•East:theAtlanticOcean•West:thePecificOceanThreeParts•Theeasternpart:highlands,theAppalachianRange•Thewesternpart:highplateaus,mountains,TheRockyMountains•Themiddlepart:thegreatplainsWaters•TheMississippiRiver•ThefiveGreatLakes•TheNiagaraFallsSixRegions•NewEngland•theMid-AtlanticStates•theSouth•theMidwest•theSouthwest•theWestThanks