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"The Great Smoke Pall", generated by the Chinchaga fire, the largest recorded fire in North American history, was first recorded in present-day Nunavut and may eventually have circled the entire globe.

Chinchaga fire

1950 forest fire in British Columbia and Alberta

The Chinchaga fire, also known as the Wisp fire, Chinchaga River fire and Fire 19, was a forest fire that burned in northern British Columbia and Alberta in the summer and early fall of 1950. With a final size of between 1,400,000 and 1,700,000 hectares, it is the single largest…
Source: Wikipedia (CC BY-SA)

Nunavut

Territory of Canada

Nunavut is the largest and northernmost territory of Canada. It was separated officially from the Northwest Territories on April 1, 1999, via the Nunavut Act and the Nunavut Land Claims Agreement Act, which provided this territory to the Inuit for self-government. The boundaries…
Source: Wikipedia (CC BY-SA)