History 1,218 History and criticism 371 Philosophy 250 Politics and government 211 Social conditions 179 Social aspects 156 Criticism and interpretation 117 Civilization 116 Law 109 Religion 108 Economic conditions 107 Social life and customs 98 Religious aspects 89 Economic aspects 88 African Americans 86 Political aspects 85 Women 84 Study and teaching 83 Science 78 Political science 76 Manners and customs 74 Education 73 Intellectual life 73 Christianity 62 Psychology 62 Research 62 Diplomatic relations 60 Foreign relations 60 Indigenous peoples 58 Sociology 58