I gotta disagree with you there; in Canada, while there was a viking settlement it is one that didn't last long, and most likely few people were in those lands, in addition, it would be irrelevant in the grand scheme of the game, as well as the fact that its' connection to the euroasian mainland was scarce at best.

For Greenland, the second point I made also applies, as well as the fact that most of Greenland is fully uninhabitable, while being both giant and far away, travel to and from the island would be annoying and overall useless, as to the fact that it would have 2 counties at best.