Foreign relations -- 166 History -- 90 Politics and government -- 83 Politics and government 56 Biography -- 40 Industry and state -- 33 Economic conditions -- 30 more ... Foreign economic relations -- 30 Relations -- 28 Economic policy -- 26 Congresses -- 24 Economic policy 22 History 22 Military policy 21 Presidents -- 21 Congresses 20 National security -- 20 Agriculture and state -- 19 Economic conditions 19 World politics -- 19 Government policy -- 17 Economic aspects -- 16 Foreign relations 15 Public opinion -- 15 Heads of state -- 13 Military relations -- 13 Political aspects -- 13 Race relations 13 Economic aspects 12 Social conditions -- 12 less ...