Earlier quoted context omitted.
By what right did the the land belong to the native Americans? Do you think all the native tribes spilled out of Alaska and then neatly fitted themselves into mutually-recognized non-overlapping territories never to be disturbed?
Indigenous people have been in NA for an extremely long time and have sorted themselves into nations over that time just like any where else in the world. If there are overlapping disagreements between Indigenous Nations about land title, as there are with all sorts of modern nations around the world, there are lots of modern mechanisms to settle that. Not sure how any of this has any relevance or should be used as a…
* As I've mentioned in another comment, true "indigenous" Alaskans are no more, having been replaced by an unrelated group of people in a later migration to the Americas.