History 31,846 Politics and government 14,570 Social conditions 5,139 Social life and customs 4,525 Histoire 4,014 Description and travel 3,560 Indians of South America 3,486 more ... Civilization 2,951 Antiquities 2,662 Foreign relations 2,549 Economic conditions 2,513 Race relations 2,028 Manners and customs 1,753 Politique et gouvernement 1,389 Indians of Mexico 1,388 Travel 1,300 Relations 1,280 Ethnic relations 1,256 African Americans 1,163 Emigration and immigration 1,121 Intellectual life 1,094 Government relations 1,070 Immigrants 1,042 Presidents 1,010 Social aspects 925 Frontier and pioneer life 920 Historiography 918 Mayas 917 International relations 910 Religion 910 less ...