As a Canadian (and a Vancouverite by origin) it makes me smile when people refer to the HUGE number of Asians in BA & Argentina.
The Nikkei Association place the number of Asians in Argentina around 70,000 (32,000 Japanese, 35,000 Koreans, 2,000 Laotians) -- out of 36million people.
Compare that to Canada (population figure from 2006 census = 32million): 3.2 million to 4.4 million — The projected number of members of the South Asian or Chinese visible minority groups. Roughly half of all visible minority persons would belong to these two groups in 2017. Nearly one of every three people living in British Columbia would belong to a visible minority group in 2017, under the reference scenario. (Source: StatsCan)
Taking into consideration the much larger population of Japanese next door in Brasil, as well as in Peru, I think we have to conclude that using the term HUGE in reference to the numbers of Japanese in Argentina is a bit of an overstatement ; )
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Here are some articles that may interest you:
"The nineteenth century founders of the nation aimed to make Argentina a white nation through various policies aimed at eliminating ethnic minority populations, while simultaneously encouraging European immigration [...] Recent estimates of the indigenous population in Argentina vary widely from 450,000 to 1.5 million, approximately one to four per cent of the total Argentine population of approximately 36 million. These differing figures expose the lack of adequate census data on indigenous peoples, and make it difficult to gauge their civic and political participation. The last census of indigenous peoples was taken between 1965 and 1968."
From:
http://academic.udayton.edu/race/06hrights/GeoRegions/SouthAmerica/argentina01.htm
"To date, over 65 percent of the country's foreign-born population of 1,531,940 comprises immigrants from neighboring countries (see Figure 1), and only 4.2 percent of the population is foreign born compared with its peak of 30 percent in 1914. Nevertheless, Argentina's net migration rate remains positive at 0.4/1,000 population in 2005, and the country is host to over half of South America's migrant population. "
Good stats -- figures states immigrants mostly from Paraguay (
http://www.migrationinformation.org/Profiles/display.cfm?ID=374)
Basic history of immigration to Argentina:
http://www.yale-university.com/ynhti/curriculum/units/1990/1/90.01.06.x.html