Politics and government -- 7 Economic integration 4 Foreign relations -- 3 History -- 3 Security, International 2 Aliens -- 1 Citizenship -- 1 more ... Civil rights -- 1 Colonies -- 1 Congresses 1 Congresses -- 1 Cultural assimilation -- 1 Duty-free importation -- 1 Economic conditions 1 Economic history -- 1 Economic policy 1 Emancipation -- 1 Emigration and immigration -- 1 Ethnic relations 1 Ethnic relations -- 1 Ethnicity -- 1 Europe 1 European Union 1 Free choice of employment -- 1 Freedom of movement -- 1 Government policy 1 International relations and culture 1 International trade 1 Islam -- 1 Jews -- 1 less ...