late edit: DISCLAIMER: The pictured map is not actually a representation of the territories before colonisation. It's a hypothetical map of what countries there might have been had the continent not been colonised, thus all the names and borders are fictional and have never existed.
For good actual maps, check out native-land.ca.
Haida Gwaii is the name of the island, not the nation. And the Salish are coastal. Totally wrong. :/
It is the name of the island. But not Vancouver Island.
Yeah, sorry if I wasn't clear. Haida Gwaii isn't even on the map!