WashingtonD.C.isthecapitaloftheUnitedStates.It'sthecent...
问题详情：WashingtonthecapitaloftheUnitedStates.It'sthecenterofthenationalgovernment.It'sabusy，workingcitywithalargepopulation.Butwhatismore，Washingtonisalsoacityofhistoryandculture.Washingtonwascreated...