more popular as alternative destination for internal migrants. In Italy, during the country's economic miracle in the 1950s and 1960s, the so-called "industrial triangle" of Northwest Italy experienced waves of immigrants coming from Southern Italy, due to the southern portion of the country remaining underdeveloped and stricken with poverty. The peak was reached between 1955 and 1963, when as much as 1,300,000 southern workers moved to the northern industrial cities. After a pause in the 1980s the north–south migration has resumed, this time headed to other areas of the north and Central Italy. Brazil, between the 1950s to 1970s, had a strong migration of the population from the Northeast to the regions of São Paulo and Rio de Janeiro, due to the industrialization of Southeast of Brazil, in contrast to the drought and poverty of the Brazilian Northeast. Secondary migration A subtype of internal migration is the migration of immigrant groups—often called secondary or onward migration. Secondary migration is also used to refer to the migration of immigrants within the European Union. In the United States, the Office of Refugee Resettlement, a program of the U.S. Department of Health and Human Services's Administration for Children and Families, is tasked with managing the secondary migration of resettled refugees. However, there is little information on secondary migration and associated programmatic structural changes. Secondary migration has been hypothesised as one of the driving forces behind the distribution of resettled refugees in the United States. See also Internally displaced person Internal colonialism Internal passport Foot voting Migrant worker References Human migration Demographic economics