History 160 Foreign relations 94 Politics and government 82 Relations 45 Histoire 39 Social conditions 26 African Americans 16 more ... Economic conditions 16 Civilization 15 Social life and customs 12 Emigration and immigration 10 Race relations 10 Social aspects 10 Diplomatic relations 9 Presidents 9 Relations extérieures 9 Description and travel 8 Politique et gouvernement 8 Reconstruction (U.S. history, 1865-1877) 8 Causes 7 Ethnic relations 7 Civil rights 6 Ethnic identity 6 Intellectual life 6 International relations 6 Jews 6 Political activity 6 Political aspects 6 Public opinion 6 Puerto Ricans 6 less ...