History 4,783 Politics and government 1,515 Description and travel 1,117 Social conditions 894 Social life and customs 855 Antiquities 600 Manners and customs 549 more ... Race relations 497 Civilization 448 African Americans 436 Economic conditions 424 Foreign relations 338 International relations 338 Indians of Mexico 299 Indians of South America 292 Mayas 274 Ethnic relations 265 Indians of North America 255 Jews 222 Religion 206 Slavery 201 Frontier and pioneer life 181 Relations 168 Black people 167 Ethnicity 148 Indians of Central America 147 Intellectual life 147 Emigration and immigration 144 Colonies 143 Social aspects 141 less ...