World War, 1939-1945 16 Foreign relations 15 History 8 Politics and government 7 Campaigns 6 International relations 6 Economic conditions 5 more ... Foreign economic relations 5 International economic relations 5 Causes 4 Diplomatic relations 4 Economic integration 4 Free trade 4 Social aspects 4 Social conditions 4 Economic policy 3 Imperialism 3 Militarism 3 Military policy 3 Atrocities 2 Diplomatic history 2 Fascism 2 Geopolitics 2 Guitar music (Slack key) 2 Hawaiian guitar music 2 History and criticism 2 Military campaigns 2 Military relations 2 National security 2 Pearl Harbor (Hawaii), Attack on, 1941 2 less ...