History 1,421 Politics and government 566 Foreign relations 326 Economic integration 319 Economic conditions 243 Social conditions 189 Civilization 153 Social aspects 153 Economic policy 119 Emigration and immigration 97 Political aspects 97 Nationalism 93 Economic aspects 87 Relations 87 National security 81 Intellectual life 80 Government policy 78 World War, 1939-1945 77 European federation 75 Women 70 History and criticism 62 Political parties 61 Historiography 53 Security, International 52 Philosophy 46 Public opinion 46 Democracy 45 Foreign economic relations 45 Social policy 45 Addresses, essays, lectures 44