History 150 Foreign relations 88 Politics and government 59 Emigration and immigration 55 Relations 52 Historia 40 Social conditions 36 Máis ... History and criticism 33 Mexicans 31 Emigración e inmigración 27 Economic conditions 24 Relaciones exteriores 24 Social aspects 23 Criticism and interpretation 22 Motion picture producers and directors 21 Relaciones internacionales 21 Motion pictures 19 Economic aspects 18 Immigrants 16 Mexicanos 16 Condiciones sociales 15 Government policy 14 Relaciones 14 American literature 13 Description and travel 13 Foreign economic relations 13 Política y gobierno 13 Civilization 12 Mexican Americans 12 Política 12 menos ...