History Politics and government 151 Histoire 124 Social conditions 99 Race relations 90 Social life and customs 81 African Americans 75 more ... Civilization 61 Economic conditions 56 Description and travel 49 Ethnic relations 45 Foreign relations 40 Frontier and pioneer life 31 Sources 31 Colonies 27 Indians of North America 26 Emigration and immigration 25 Jews 24 Social aspects 23 Relations 22 Slavery 22 Black people 21 Immigrants 19 Political activity 18 Puritans 18 Civil rights 17 Indians of Mexico 17 Indians of South America 17 Italian Americans 16 Antiquities 15 less ...