- 問題詳情:Bytheearly20thcentury,astheUnitedStatesbecameaninternationalpower,itsculturalself-identity(認同)becamemorecomplex.TheUnitedStateswasbecomingmorediverseasimmigrantsstreamedintothecountry,settlingespeciallyinAmerica’sgrowingurbanareas.Atthisti...
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