History 2,354 Politics and government 675 Foreign relations 305 Civilization 248 Congresses 226 Economic integration 209 Social conditions 183 Economic conditions 175 Relations 158 History and criticism 147 Intellectual life 147 Social aspects 144 Civilization, Medieval 130 World War, 1939-1945 119 Church history 115 Description and travel 115 Middle Ages 110 World War, 1914-1918 102 European federation 101 Women 95 Influence 88 Nationalism 80 Colonies 76 History, Military 73 Law and legislation 72 Philosophy 71 Political aspects 71 Social life and customs 70 Human rights 69 Law 67 Architecture 65 Economic aspects 65 National security 62 Causes 61 Defenses 61 Ethnic relations 61 Government policy 60 Emigration and immigration 59 Standards 57 Historiography 56 Travel 56 Public opinion 55 Commerce 54 Economic policy 54 Environmental aspects 53 World politics 52 Christianity 50 Renaissance 50 Antiquities 49 Democracy 48 Reformation 48 Science 47 Art, European 46 Biography 46 Military policy 46 Enlightenment 45 Religious aspects 45 Study and teaching 45 Civil rights 44 Military art and science 44 Political science 41 Revolutions 40 Fascism 39 Music 39 Political parties 38 Sources 38 Art 37 Socialism 36 Transportation 36 Cities and towns 35 Exhibitions 35 Research 35 Imperialism 34 Case studies 33 Criticism and interpretation 33 Religion 33 Comparative government 32 Security, International 32 Social policy 32 Witchcraft 32 Languages 31 Motion pictures 31 Social history 31 Foreign economic relations 30 History of doctrines 30 Jews 30 Painting, Modern 29 Islam 28 Painting, European 28 European influences 27 Finance 27 Forests and forestry 27 Tourism 27 Europe 26 Employment 25 Globalization 25 Minorities 25 Philosophy, Modern 25 Pollution 25 Bibliography 24