History 26 997 Politics and government 10 330 Foreign relations 6 599 African Americans 6 472 Indians of North America 5 476 Histoire 4 258 Race relations 4 134 mer ... Social conditions 4 027 Presidents 3 411 Politique et gouvernement 2 410 Civilization 2 366 Social life and customs 2 312 Campaigns 2 126 Civil rights 1 857 Publications about Graduates 1 758 Diplomatic relations 1 747 Relations extérieures 1 662 Noirs américains 1 643 Slavery 1 623 Antiquities 1 500 Generals 1 375 Description and travel 1 296 Social aspects 1 270 Government relations 1 215 Economic conditions 1 185 Regimental histories 1 154 Political aspects 1 105 Ethnic relations 1 042 Racism 960 Intellectual life 935 mindre ...