Immigrants Emigration and immigration 13 History 12 Political aspects 7 Government policy 4 Social conditions 4 Border crossing 3 more ... Carbon dioxide mitigation 3 Colonization 3 Cultural pluralism 3 Globalization 3 Histoire 3 Internet 3 Political activity 3 Political participation 3 Pressure groups 3 Research 3 Civilization 2 Cubans 2 Deportation 2 Ethnicity 2 General 2 Indigenous peoples 2 Migrations 2 Religious life 2 SOCIAL SCIENCE / General 2 Social aspects 2 Abuse of 1 Africans 1 Archival resources 1 less ...