History Politics and government 324 Social conditions 165 Women 130 Colonies 113 Social aspects 106 Foreign relations 81 Labor and laboring classes 74 Economic conditions 65 Sources 59 Social life and customs 54 History and criticism 52 Socialism 51 Trade-unions 51 Government policy 50 Economic policy 48 Industries 48 Education 44 Political activity 44 Political parties 42 Political aspects 40 Feminism 39 Industrial relations 39 Public opinion 38 Social policy 38 Emigration and immigration 36 Race relations 35 Economic aspects 34 World War, 1939-1945 34 Commerce 33