Politics and government -- 17 History -- 12 Congresses -- 11 Foreign relations -- 10 Congresses 9 Monetary policy -- 5 Political parties -- 5 more ... Economic integration 4 Ethnicity -- 4 Foreign economic relations -- 4 Minorities -- 4 National security -- 4 Nationalism -- 4 Public opinion -- 4 Relations -- 4 Citizenship -- 3 Ethnic relations 3 Government policy -- 3 International cooperation -- 3 Political activity -- 3 Politics and government 3 Terrorism -- 3 Arms control -- 2 Biography -- 2 Case studies -- 2 Civil rights -- 2 Coalition governments -- 2 Cold War 2 Commerce 2 Commerce -- 2 less ...