History 3,863 History and criticism 721 Politics and government 686 Social conditions 546 Social aspects 497 Political aspects 308 Social life and customs 268 更多 ... Race relations 249 African Americans 233 Women 210 Economic conditions 193 Law and legislation 191 Criticism and interpretation 189 Manners and customs 177 Foreign relations 174 Intellectual life 170 Motion pictures 170 Histoire 169 Diplomatic relations 162 Economic history 145 Civilization 143 Antiquities 140 Government policy 138 Influence 134 Emigration and immigration 132 Civil rights 125 Indians of North America 122 Political activity 109 Religious aspects 106 Literature 105 少 ...