History Politics and government 6,257 History and criticism 4,737 Social conditions 3,869 Social aspects 3,321 African Americans 2,674 Social life and customs 2,100 Race relations 2,026 Philosophy 1,937 Political aspects 1,923 Women 1,864 Civilization 1,808 Intellectual life 1,568 Economic conditions 1,518 Foreign relations 1,482 World War, 1939-1945 1,409 Criticism and interpretation 1,371 Jews 1,291 Civil rights 1,164 Influence 1,163 Church history 1,156 Historiography 1,136 Indians of North America 1,099 Ethnic relations 1,033 Slavery 964 Women and literature 941 Antiquities 925 Education 924 Religious aspects 917 Motion pictures 895