Boundaries of Nunavut

Why is it that when Nunavut was created as a homeland for the Inuit, half of Victoria Island and all of Banks Island—both inhabited only by Inuit—remained in the Northwest Territories? While I’ve got a couple theories, and I know the ultimate answer is surely “politics,” I’m sure there has to be a story behind it. So: does anybody know the full story of how there came to be a long line splitting vast Victoria Island in twain?

Thanks,
~CMS

It’s not like all of the Inuit in Canada live in Nunavut. The other third of Victoria Island is in the Inuvik Region of NWT, and is part of the Inuvialuit Settlement Region, and probably could not be severed from NWT without abrogating the Inuvialuit Final Agreement.

Also note that there are many Inuit living in Nunavik, the northern portion of Québéc province.

Nametag seems to have nailed it, as the Wikipedia article on Parker’s Notch suggests:

It’s worth noting that the boundary on Google Maps is way off from where it should be. The “notch” on Google is a plain rectangle, and some way to the west of Quunnguq lake. The actual border wiggles all round the shoreline of the lake in a ridiculously complex shape.