History Foreign relations -- 26 History -- 21 Race relations 6 Emigration and immigration -- 5 Foreign relations 4 Juvenile literature 4 more ... National security -- 3 Politics and government 3 Afro-Americans -- 2 Arms control -- 2 Asian Americans -- 2 Chinese Americans -- 2 Civil rights -- 2 Civilization 2 Decision making -- 2 Economic conditions 2 Feminism -- 2 Foreign economic relations 2 Foreign relation administration -- 2 History, Military 2 Immigrants -- 2 International economic relations -- 2 Legal status, laws, etc -- 2 Political aspects -- 2 Politics and government -- 2 Press and politics -- 2 Relations -- 2 Social conditions 2 Treaties 2 less ...