Immigration to Australia from Karachi

The Aborigines first arrived in Australia from somewhere in Asia at least 40,000 years ago and probably up to 60,000 years ago. They had occupied most of the continent by 30,000 years ago, including the south-western and south-eastern corners. Tasmania at this point was still part of the mainland; it was only separated by rising sea levels some 16,500 to 22,000 years later. Their successful adaptation to a wide range of environments had enabled the population to grow to between 300,000 and 1 million by the time of the first European settlement. Macassan traders from what is now Indonesia are thought to have been visiting Arnhem Land well before the 17th century to harvest sea cucumbers for export to China. There were also contacts with New Guinea, and Chinese, Malaysian, and Arab sea captains may also have landed in northern Australia after the 15th century. Australia remained unexplored by the West, however, until the 17th century.

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