Congresses Congresses -- 28 Economic policy -- 11 Ethnic relations -- 6 Politics and government -- 6 Commercial policy -- 5 Economic conditions -- 4 more ... Foreign economic relations -- 4 Foreign relations -- 4 International cooperation -- 4 Marine resources -- 4 Competition, International -- 3 Culture -- 3 Disarmament -- 3 Economic aspects -- 3 History -- 3 International trade -- 3 Investments, Foreign -- 3 Social aspects -- 3 Arms control -- 2 Commerce -- 2 Congresses. -- 2 Defenses -- 2 Economic development -- 2 Environmental policy -- 2 Government policy -- 2 International economic relations -- 2 Minorities -- 2 National security -- 2 Nuclear disarmament -- 2 less ...