History 546 Social conditions 264 Economic conditions 232 Women 198 Politics and government 181 African Americans 166 Foreign relations 159 more ... Education 116 Economic policy 105 Population 97 Slavery 69 Employment 67 Social aspects 67 Folklore 59 Cities and towns 56 Agriculture 51 Jews 51 Research 51 Rural conditions 51 Social life and customs 50 Working class 50 Families 49 Industries 47 Constitutional history 45 Feminism 45 Labor unions 44 Civil rights 42 Villages 42 Law and legislation 41 Economic aspects 40 less ...