History 292 History and criticism 76 Social aspects 74 Criticism and interpretation 72 Social conditions 69 Politics and government 63 Research 41 more ... Philosophy 32 Political aspects 32 Economic conditions 28 Economic aspects 26 Foreign relations 26 Race relations 26 Religious aspects 26 Education 25 Government policy 25 Influence 23 Social life and customs 23 Law and legislation 21 Manners and customs 20 Psychological aspects 20 African Americans 19 Economic history 19 Themes, motives 19 Art 18 Diplomatic relations 18 Influence (Literary, artistic, etc.) 18 Women 18 Cancer 17 Ethnic identity 17 less ...