Economic conditions 1,319 History 830 Social conditions 368 Politics and government 263 Economic aspects 248 African Americans 234 Economic history 229 more ... Emigration and immigration 151 Histoire 147 Economics 140 Economic policy 132 Conditions économiques 129 Home economics 122 Description and travel 121 Commerce 101 Agriculture 92 Slavery 89 Race relations 88 Employment 84 World War, 1914-1918 75 Social life and customs 65 Cooking, American 64 Social aspects 61 Taxation 59 Politique et gouvernement 56 Population 53 Conditions sociales 52 Working class 52 Travel 49 Immigrants 46 Indians of North America 46 Labor and laboring classes 46 Civilization 39 Labor unions 39 Cooking 36 Foreign relations 36 Communism 34 Formulas, recipes, etc 34 Labor 34 Finance 33 less ...