History 566 Politics and government 246 History and criticism 201 Social aspects 132 Political aspects 119 Social conditions 114 Philosophy 101 Foreign relations 89 Economic aspects 66 Government policy 63 Economic conditions 61 Emigration and immigration 50 Jews 48 Social life and customs 46 Criticism and interpretation 44 Democracy 38 Political activity 38 Race relations 37 Immigrants 35 National security 34 Civil rights 33 Economic policy 33 Ethnic relations 33 Influence 33 Nationalism 31 American literature 30 English literature 30 Human rights 29 Military policy 29 Relations 29