History 3,887 Politics and government 1,022 Social conditions 548 Description and travel 538 Social life and customs 455 Race relations 442 African Americans 355 more ... Foreign relations 282 Frontier and pioneer life 273 Civilization 267 Economic conditions 225 Indians of North America 194 Antiquities 176 Ethnic relations 155 Civil rights 140 Relations 138 Discovery and exploration 137 Indians of Mexico 131 Missions 118 Sources 117 Mayas 116 Colonies 105 Social aspects 102 Indians of South America 101 Intellectual life 92 Slavery 88 Jews 77 Religion 75 Immigrants 71 Historiography 70 less ...