History 24 370 Politics and government 8 458 Foreign relations 4 832 History and criticism 4 026 Social conditions 3 201 International relations 2 888 African Americans 2 469 mer ... Social aspects 2 065 Economic conditions 2 043 Presidents 1 948 Race relations 1 862 Political aspects 1 858 American literature 1 645 Criticism and interpretation 1 531 Intellectual life 1 367 Influence 1 291 Civilization 1 186 World War, 1939-1945 1 087 Economic policy 1 084 Social life and customs 1 060 Diplomatic relations 1 040 Women 1 035 Civil rights 1 027 Political and social views 892 Women and literature 856 American fiction 847 Manners and customs 819 Relations 749 Campaigns 730 Popular culture 718 mindre ...