Dual citizenship and political integration.
D003710:Demography; D019049:Developed Countries; D004641:Emigration and Immigration; D004651:Employment; D005006:Ethnicity; D005060:Europe; D006280:Health Workforce; D011057:Politics; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics; D014171:Transients and Migrants
Demographic Factors; Developed Countries; Europe; Human Resources; International Migration; Labor Force; Migrants; Migration; Nationality; Northern Europe; Political Factors; Population; Population Characteristics; Population Dynamics