History 207 Law and legislation 140 Economic conditions 129 Education 118 Politics and government 116 Foreign relations 111 Study and teaching 68 more ... Relations 65 Emigration and immigration 62 Industries 61 Economic forecasting 59 Statistics 57 Taxation 57 History and criticism 55 Finance 54 Social conditions 51 United States 50 Commerce 45 Economic history 44 Historia 42 Estados Unidos 41 UNITED STATES 41 Research 39 Droit 38 Zeitschrift 38 Education, Higher 37 Law 37 Hispanic Americans 36 Universities and colleges 36 Administration 35 less ...