History 30,552 Politics and government 13,982 Social conditions 4,814 Social life and customs 4,292 Description and travel 3,528 Indians of South America 3,380 Histoire 3,164 more ... Civilization 2,815 Antiquities 2,563 Foreign relations 2,466 Economic conditions 2,441 Race relations 1,926 Manners and customs 1,581 Indians of Mexico 1,340 Relations 1,230 Ethnic relations 1,219 Travel 1,136 African Americans 1,120 Emigration and immigration 1,062 Intellectual life 1,046 Politique et gouvernement 1,036 Government relations 1,033 Immigrants 991 Presidents 963 Frontier and pioneer life 901 International relations 872 Historiography 869 Mayas 855 Religion 840 Social aspects 835 less ...