History 650 Social conditions 192 African Americans 180 Politics and government 159 Race relations 119 Social aspects 73 Architecture 66 更多 ... Buildings, structures, etc 63 History and criticism 51 Indians of North America 46 Antiquities 45 Social life and customs 43 Economic conditions 39 Civil rights 37 Intellectual life 37 City planning 34 Political activity 34 Art 33 Education 32 Immigrants 32 Political aspects 30 Emigration and immigration 28 Ethnic relations 28 Working class 28 Jews 25 Women 24 Ethnic identity 23 Law 22 Mississippian culture 22 Manners and customs 21 少 ...