History 263 Foreign relations 142 Politics and government 105 International relations 95 World politics 44 Relations 43 World War, 1939-1945 38 more ... Economic conditions 34 Diplomatic relations 25 Political aspects 23 Civilization 22 History and criticism 21 Foreign economic relations 19 Intellectual life 19 International economic relations 18 National security 18 Cold War 17 Emigration and immigration 17 Public opinion 17 European influences 16 American influences 15 Art, American 15 Americans 14 Influence 14 Social conditions 14 American literature 12 Social aspects 12 Travel 12 Causes 11 Criticism and interpretation 11 less ...