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Immigration |
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immigration, entrance of a person (an alien alien, in law, any person residing in one political community while owing allegiance to another. A procedure known as naturalization permits aliens to become citizens.
..... Click the link for more information. ) into a new country for the purpose of establishing permanent residence. Motives for immigration, like those for migration generally, are often economic, although religious or political factors may be very important. High rates of immigration are frequently accompanied by militant, and sometimes violent, calls for immigration restriction or deportation by nationalist groups. See also naturalization naturalization, official act by which a person is made a national of a country other than his or her native one. In some countries naturalized persons do not necessarily become citizens but may merely acquire a new nationality. ..... Click the link for more information. . Immigration in the United StatesFrom 1820 to 1930, the United States received about 60% of the world's immigrants. Population population, the inhabitants of a given area, but perhaps most importantly, the human inhabitants of the earth (numbering about 6.2 billion in 2002), who by their increasing numbers and corresponding increasing needs can seriously affect the global ecosystem. Restrictions placed on immigration were often based on race or nationality. There were also restrictions against the entrance of diseased persons, paupers, and other undesirables, and laws were passed for the deportation deportation, expulsion of an alien from a country by an act of its government. The term is not applied ordinarily to sending a national into exile or to committing one convicted of crime to an overseas penal colony (historically called transportation). Immigration in Other CountriesCanada, in the first third of the 20th cent., began to receive an increasing number of immigrants, attracted by the expansion of agriculture in the west and the development of industry in the east. Australia and New Zealand received many European immigrants in the 19th cent.; the former country has been characterized by a preference for immigrants of British stock and by a policy of excluding Africans and Asians that dated from the late 19th cent. After 1965, however, this policy began to change; by the 1970s Australia had abandoned the system of racial preferences, and Asian immigration rapidly increased. Two major trends in immigration emerged after World War II: Australia and New Zealand became the countries with the highest rates of increase, and large numbers of Europeans immigrated to Africa. In recent decades, immigration to Europe from Asia and Africa has also substantially increased, as has emigration from Eastern Europe to the newly reunified Germany. BibliographySee studies by M. R. Davie (1983), I. Glazier and L. DeRosa (1986), V. N. Sinha (1987), D. R. Steiner (1987), and A. Richmond (1988). immigration [‚im·ə′grā·shən] (ecology) The one-way inward movement of individuals or their disseminules into a population or population area. (genetics) Gene flow from one population into another by interbreeding between members of the populations. Immigration (embryology) one of the processes of gastrulation, in which certain cells migrate to the inside of the embryo and distribute themselves under its surface layer. Immigration entry into a country for the purpose of permanent or temporary residence by citizens of other countries. Immigration has economic causes (the importation of a labor force or the entry into countries with more favorable working conditions, a higher standard of living, etc.), military causes (the capture of foreign lands and their military colonization), and political causes (flight from political, national, racial, religious, and other types of persecution, the exchange of national minorities among states, etc.). Immigration has played a very important role in settling certain parts of the world and in forming the population of many of the world’s countries. Immigration has a vital influence on population dynamics; its demographic consequences are conditioned not only by the number of immigrants but also by their sex and age structure—there is a noticeable predominance among immigrants of young and middle-aged people and of men. Immigration leads to a mixing of various ethnic groups in the population, as a result of which new nations and nationalities are formed. Immigration is characteristic of all historical periods. An enormous influence on the formation of the population of Eurasia was brought about by the migrations that have taken place during the past 2,000 years, such as the Great Migration of peoples throughout Europe (fourth to seventh century) and the migrations connected with the Arab conquests (seventh and eighth centuries) and with the expansion of the Turks and Mongols (11th to 17th century). The era of the great geographical discoveries (from the mid-15th to the mid-17th century) laid the foundation for the extensive growth of intercontinental migrations, for the most part from Europe to other parts of the world, primarily to America and Australia. During the 20th century the pace of migration has not slackened, although the migrations themselves have acquired a different aspect in a great number of instances, such as the enormous population shifts connected with the two world wars; the resettlement of more than 16 million persons brought about by the partition of British India into two independent states—India and Pakistan; and the migrations connected with the resettlement of Jews in Israel, as well as the flight and ousting of Arabs. At the same time there are still significant shifts of population for economic reasons. Since World War II (1939–45) the immigration of a labor force into the developed countries of Western Europe has taken place on a wide scale (the number of such immigrants has reached 8 million, including 3.4 million to France, 2 million to the Federal Republic of Germany, 1 million—that is, 16 percent of the country’s population—to Switzerland, and so forth). The countries that are supplying the immigrants are Spain, Italy, Portugal, Greece, Turkey, and the countries of North Africa. S. I. BRUK Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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