probably more UK+Scandinavia+Iceland. Can't think of any real USA allusions.
Like, the north is flipped. Ibben is Iceland. but its to the east, instead of the west. and the entire top of Europe/Asia is missing... and is instead attached to Westeroes, and north/northeast.
Summer isles is the Canary Islands or Cape Verde.
Playing Skyrim again, and rereading all the Elder scroll lore.. theres way too much in common. I wonder who is cribbing from who here. ASoiF is 96, 98, 2000, 2005, 2011. TES is 94, 96, 2002, 2006, 2011 for main titles.