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Human migration is the movement of people from one place to another, [1] with intentions of settling, permanently or temporarily, at a new location (geographic region). The movement often occurs over long distances and from one country to another (external migration), but internal migration (within a single country) is the dominant form of human migration globally.
Environmental migrants are people who are forced to leave their home of residency due to sudden or long-term changes to their local or regional environment. These changes compromise their well-being or livelihood, and include increased drought , desertification , sea level rise , and disruption of seasonal weather patterns (such as monsoons [ 1
Population exchange is the transfer of two populations in opposite directions at about the same time. In theory at least, the exchange is non-forcible, but the reality of the effects of these exchanges has always been unequal, and at least one half of the so-called "exchange" has usually been forced by the stronger or richer participant.
Effects may vary due to factors like the migrants' age, education, reason for migration, [80] the strength of the economy, and how long ago the migration took place. [ 81 ] Low-skill immigration has been linked to greater income inequality in the native population, [ 82 ] [ 83 ] but overall immigration was found to account for a relatively ...
Development-induced displacement and resettlement (DIDR) occurs when people are forced to leave their homes in a development-driven form of forced migration.Historically, it has been associated with the construction of dams for hydroelectric power and irrigation, but it can also result from various development projects such as mining, agriculture, the creation of military installations ...
The Chinese Development Research Center of the State Council also undertook a study in 2010 characterizing the scope of migration for work and relevant statistics of that population. The survey measured demographics such as age, education level, job type, income, expenses, housing, and leisure activities.
Some examples of internal migration in Brazil occurred in the 1960s, when the droughts devastated the Northeast of Brazil, leading thousands of people to abandon their homes in the Brazilian hinterland due to the lack of agricultural alternatives and social policies in the region.
Studies show that the pre-modern migration of human populations begins with the movement of Homo erectus out of Africa across Eurasia about 1.75 million years ago. Homo sapiens appeared to have occupied all of Africa about 150,000 years ago; some members of this species moved out of Africa 70,000 years ago (or, according to more recent studies, as early as 125,000 years ago into Asia, [1] [2 ...