Territory (pop., 2006: 41,464), northern Canada. Bounded by the Arctic Ocean, Nunavut, Saskatchewan, Alberta, British Columbia, and the Yukon Territory, it reaches far north of the Arctic Circle. The capital is Yellowknife. It includes many islands, including Banks Island; the Mackenzie River; and Great Bear and Great Slave lakes. More than two-fifths of the people are American Indians (First Nations) or Inuit. In the 18th century the mainland was explored by Samuel Hearne for the Hudson's Bay Company and by Alexander Mackenzie of the North West Company. European settlers were mainly whalers, fur traders, and missionaries until the 1920s, when oil was discovered and the territorial administration was formed. Mining is the principal industry; diamonds, petroleum, and natural gas are important resources.
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