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.
My wife is Ojibwe and her tribe illegally migrated several hundred miles west about one generation before Europeans arrived, taking land that belonged to other natives.