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Subject
- Emigration and immigration162
- History65
- Government policy41
- Immigrants37
- Jews24
- Social conditions13
- Migrations11
- Border security9
- Citizenship9
- Economic aspects9
- Economic conditions8
- Social aspects8
- Ethnic relations6
- Europeans6
- National security6
- Politics and government6
- World War, 1939-19456
- Brain drain5
- Description and travel5
- European Americans5