History 1,140 Colonies 714 Discovery and exploration 542 Discoveries in geography 435 Indians 191 Spanish 190 Indians of North America 180 History and criticism 160 Administration 159 Antiquities 156 Politics and government 136 Civilization 127 Slavery 117 Description and travel 105 Colonization 80 Indians, Treatment of 78 Commerce 76 Social conditions 76 Black people 75 In literature 75 Race relations 69 British 67 Historiography 67 First contact with other peoples 64 Social aspects 63 Spanish colonies 60 Slave trade 59 Foreign relations 58 Relations 58 British colonies 56 Ethnic relations 53 Religion 53 African Americans 48 Explorers 48 Indians of South America 48 International relations 48 Imperialism 47 Missions 46 Government relations 45 Economic conditions 44 Social life and customs 44 Intellectual life 43 Ethnology 41 Political aspects 40 American literature 39 Norse 39 French 38 Indigenous peoples 36 Influence 34 Voyages and travels 31 Ethnicity 30 Literatures 30 Indian art 27 Africans 25 Causes 25 Enslaved persons 25 Natural history 24 Emigration and immigration 23 English literature 23 Pan-Americanism 23 African diaspora 22 African influences 22 Antislavery movements 22 Defenses 22 Economic policy 22 Ethnic identity 22 Histoire 22 Languages 22 Public opinion 22 Religious aspects 22 Art 21 Free trade 21 Travel 21 Women 21 Economic aspects 20 Knowledge and learning 20 National characteristics, American, in literature 20 Origin 20 Prehistoric peoples 20 Early accounts to 1600 19 Frontier and pioneer life 19 Indians of Mexico 18 Legal status, laws, etc 18 Philosophy 18 Archaeology 17 Law and legislation 17 Migrations 17 Spaniards 17 Anthropology 16 Church history 16 Civil rights 16 Criticism and interpretation 16 Geography 16 Manners and customs 16 Music 16 Population 16 Race identity 16 Territorial expansion 16 World War, 1939-1945 16 American influences 15