Almost every culture existing today occupies the land a previous culture occupied, and in most cases, they evicted, assimilated or killed the previous occupiers of the land. Even the Eskimos, call them Inuit if you want, who live in the most gawdawful place currently occupied by mankind out side of Antartcia, which doesn’t really count, displaced the Dorset culture for their spot. I presume they were being pushed out by someone else tougher. That’s just history. Learn to deal with it.