History 244 United States Politics & Government 165 Historia 155 United States History 126 Politics and government 123 Education and state 120 Education 85 Estado 74 Church and state 73 State, The 72 Política y gobierno 68 Law and legislation 65 Foreign relations 59 Law 58 Droit 56 Social conditions 53 Economic conditions 51 Educación 50 Emigration and immigration 48 Social aspects 45 Relations 44 Political science 38 Política educacional 36 Tourism 34 Turismo 34 Condiciones sociales 33 Economic aspects 33 Zeitschrift 33 Travel and state 32 Emigración e inmigración 30