Economic conditions History Social conditions Politics and government 336 Social aspects 146 Race relations 103 Social change 83 more ... African Americans 82 Economic aspects 72 Women 67 Working class 63 Civilization 50 Social life and customs 49 Capitalism 48 Social classes 48 Ethnic relations 46 Slavery 43 Commerce 41 Foreign relations 41 City and town life 40 Economic policy 38 Industries 38 Political aspects 35 Industrialization 34 Land tenure 32 Emigration and immigration 31 Political activity 31 Agriculture 30 Population 30 Economic development 29 less ...