History 31,887 Politics and government 14,595 Social conditions 5,147 Social life and customs 4,528 Histoire 4,387 Description and travel 3,562 Indians of South America 3,486 more ... Civilization 2,954 Antiquities 2,663 Foreign relations 2,555 Economic conditions 2,519 Race relations 2,030 Manners and customs 1,779 Politique et gouvernement 1,504 Indians of Mexico 1,387 Travel 1,336 Relations 1,285 Ethnic relations 1,256 African Americans 1,164 Emigration and immigration 1,125 Intellectual life 1,094 Government relations 1,071 Immigrants 1,046 Presidents 1,012 Social aspects 926 Frontier and pioneer life 922 International relations 922 Historiography 920 Mayas 919 Religion 911 less ...