History Social conditions 50 African Americans 49 Race relations 42 Politics and government 30 Buildings, structures, etc 21 Civil rights 18 more ... Architecture 14 Intellectual life 14 Economic conditions 13 Social aspects 13 Civil rights movements 11 Migrations 11 Political activity 10 Social life and customs 9 City and town life 8 Working class 8 African American arts 7 Architecture and society 7 Migration, Internal 7 Social reformers 7 Buildings 6 City planning 6 Manners and customs 6 Skyscrapers 6 American literature 5 Arts and society 5 Economic history 5 History and criticism 5 Immigrants 5 less ...