Politics and government -- Foreign relations -- 12 Economic conditions -- 7 History -- 6 Economic policy 5 Politics and government 4 Congresses -- 3 more ... Economic conditions 3 Armed Forces -- 2 Civil-military relations -- 2 Civilization -- 2 Communism -- 2 Congresses 2 Economic development -- 2 Elite (Social sciences) -- 2 Foreign economic relations -- 2 Insurgency -- 2 Leadership 2 Military policy 2 Political parties -- 2 Power (Social sciences) 2 Public opinion -- 2 Relations -- 2 Social conditions -- 2 Social policy 2 Appropriations and expenditures 1 Attitudes -- 1 Authoritarianism -- 1 Baader-Meinhof Gang 1 Blacks -- 1 less ...