Economic conditions History 291 Social conditions 275 Economic history 162 African Americans 156 Politics and government 110 Conditions économiques 97 more ... Description and travel 84 Commerce 61 Emigration and immigration 57 Race relations 46 Taxation 46 Employment 44 Economic aspects 34 Slavery 33 Social life and customs 29 Economic policy 28 Agriculture 26 Conditions sociales 24 Labor and laboring classes 24 Industries 23 Travel 23 Sources 22 Communism 21 Depressions 21 Finance, Public 19 Civilization 18 Population 18 Economics 17 Histoire 17 Indians of North America 17 Politique et gouvernement 17 Immigrants 16 Militia 16 Capitalism 14 Finance 14 Social aspects 14 Working class 14 Descriptions et voyages 13 Mexican Americans 13 less ...