History 212 Foreign relations 81 Politics and government 68 Social conditions 51 Social aspects 50 History and criticism 47 Historia 42 más ... Emigration and immigration 41 Relations 39 Law and legislation 38 Economic conditions 35 Political aspects 33 Government policy 29 Race relations 25 African Americans 24 Emigración e inmigración 23 Education 22 Relaciones exteriores 22 Study and teaching 21 Mexicans 20 Philosophy 17 Economic aspects 16 Motion pictures 16 Política y gobierno 16 Criticism and interpretation 15 Economic policy 15 Finance 15 Women 15 American literature 14 Civil rights 14 menos ...