What was Gall's view of future relations between the Plains Indians and the settlers?

Gall's view of the future of the relations between plain Indians and the settlers was, extended conflict.

Explanation:

Gall had a view that there could be experienced relation constraints between the plain Indians and the settlers. This is because, the plain Indians atrocities could not come to an end unless the settlers evacuated the place in which they were pre-mordialists. Hence, the conflict over the issue of settlers occupying their place could go further into the future.