History 1,961 Politics and government 506 Social conditions 328 Description and travel 315 Social life and customs 287 Race relations 193 Civilization 186 more ... Foreign relations 182 African Americans 181 Economic conditions 132 Antiquities 102 Frontier and pioneer life 99 Ethnic relations 94 Immigrants 77 Relations 77 Dutch 73 Emigration and immigration 68 Indians of North America 67 Mayas 67 Civil rights 62 Travel 57 Dutch Americans 56 Indians of Mexico 56 Discovery and exploration 55 Indians of South America 53 Intellectual life 53 Religion 46 Colonies 41 Slavery 41 Social aspects 41 less ...