History 227 African Americans 47 Civilization 36 Social life and customs 23 Women 20 Politics and government 19 Biography 17 more ... Manners and customs 17 Children 15 Civil rights 15 Description and travel 15 Indians of North America 15 Social conditions 15 Presidents 14 World War, 1939-1945 13 Folklore 12 Slavery 12 Antiquities 10 Race relations 10 Civil rights movements 9 Almanacs, American 8 History and criticism 8 Holocaust, Jewish (1939-1945) 8 Physicists 8 Social aspects 8 Teenagers 8 Childhood and youth 7 Discovery and exploration 7 Enslaved persons 7 Jews 7 less ...