Foreign relations -- 58 History -- 37 Politics and government -- 31 Politics and government 30 Economic conditions -- 23 Relations -- 14 Social conditions -- 14 more ... History 13 Biography -- 10 Sociology 10 Social conditions 9 Social policy 9 Commerce 8 Presidents -- 8 Civilization -- 7 Economic policy -- 7 Race relations 7 Economic conditions 6 Economics 6 Foreign relations 6 Social problems 6 Social problems -- 6 Economic policy 5 Philosophy 5 Civilization 4 Commercial policy 4 Directories 4 Foreign relations administration 4 Islam -- 4 Juvenile literature -- 4 less ...