Foreign relations -- 156 Politics and government -- 63 History -- 57 Politics and government 32 Foreign economic relations -- 27 Relations -- 26 Economic conditions -- 23 more ... Military policy 20 Economic policy -- 17 World politics -- 16 National security -- 15 Congresses -- 14 History 13 Military relations -- 13 Biography -- 12 Foreign relations 12 Public opinion -- 12 Commerce -- 11 Economic policy 11 Presidents -- 11 Race relations 11 Commercial policy 10 Congresses 10 Economic aspects 10 China 9 National security 9 Sources -- 9 Cold War 8 Economic conditions 8 Emigration and immigration -- 8 less ...