Social conditions History 86 African Americans 41 Economic conditions 31 Race relations 14 Politics and government 13 Social life and customs 13 more ... Conditions sociales 11 Ethnic relations 11 Immigrants 11 Coal miners 9 Histoire 9 Puerto Ricans 9 City planning 8 Periodicals 8 Coal mines and mining 7 Community life 7 Emigration and immigration 7 Ethnic identity 7 Housing 7 Minorities 7 Social aspects 6 Societies, etc 6 Population 5 Public welfare 5 Slavery 5 Social classes 5 African American women 4 Charities 4 Education 4 German Americans 4 Household employees 4 Irish Americans 4 Pennsylvania 4 Social service 4 Social surveys 4 Citizen participation 3 Émigration et immigration 3 Hispanic Americans 3 Industries 3 less ...