Foreign relations History Politics and government 7 Economic conditions 3 History, Military 2 Social conditions 2 Anti-Americanism -- 1 more ... Civil service -- 1 Colonies -- 1 Economic policy 1 Education -- 1 Foreign economic relations 1 Foreign policy 1 Foreign public opinion 1 Foreign relations -- 1 Guerrilla warfare -- 1 History -- 1 Intervention (International law) -- 1 National characteristics, American 1 Opium trade 1 Philosophy 1 Regionalism 1 Regionalism -- 1 Revolutions -- 1 Transportation -- 1 less ...