[quote=@Aristo]
<Snipped quote by Nieszka>

That's fine; I guess there could be numerous tribes of people that have called the Godsfangs their home. 
Though it might be a stretch for the Saliszi to have been kicked out - as written in the OP history, they already had Soulsteel by the time they conquered the Rainland, which [i]likely[/i] means they were the dominant power in the Godsfangs beforehand. That's open to interpretation, of course.

I'd imagine the Arakkai have lived under the shadow of the Salished since its founding, and either are too elusive or aren't worth the Empire's time to try and conquer.
[/quote]

Just to note that the Godfangs are considerably more extensive than what is on the map. You could have conflicted stories about the origins of the Saliszi- some saying they were exiled, others that they just straight up left to go and conquer. Would be interesting if there were 'good' saliszi left in the mountains, those that didnt fall to the worship of the forge-gods and the cult of human sacrifice. 

I imagine the Salished Empire would continually skirmish with the mountain tribes and send in raiding parties for sacrifices, as the Drathans do for slaves.