History Politics and government 199 Social conditions 140 Race relations 124 African Americans 120 Social life and customs 86 Civilization 59 more ... Indigenous peoples 57 Description and travel 52 Frontier and pioneer life 52 Economic conditions 50 Foreign relations 47 Slavery 38 Ethnic relations 35 Civil rights 33 Relations 33 Women 33 Colonies 30 Puritans 29 Intellectual life 28 Social aspects 27 Gender identity 26 Nationalism 24 Political activity 24 Historiography 23 Civil rights movements 22 Riots 22 Influence 21 Discovery and exploration 20 Jews 20 less ...