History History -- 18 Foreign relations -- 11 Politics and government 9 International relations -- 5 Politics and government -- 4 Capitalism -- 3 more ... Colonies -- 3 Economic conditions 3 Economic conditions -- 3 History. -- 3 International law -- 3 Political aspects -- 3 Air power -- 2 Air warfare -- 2 Comparative economics 2 Decision making -- 2 Deforestation -- 2 Diplomacy 2 Diplomacy -- 2 Economic history 2 Emigration and immigration -- 2 Foreign economic relations 2 Foreign economic relations -- 2 Foreign relations 2 Imperialism -- 2 International economic relations -- 2 Intervention (International law) -- 2 Leadership -- 2 National security -- 2 less ...