In my area, there are several bands of Chumash -- Ventureño, Obispeño, etc -- all of which are the same nation, but different bands. Both are shown on this map

In my area, there are several bands of Chumash -- Ventureño, Obispeño, etc -- all of which are the same nation, but different bands. Both are shown on this map, the set and its subsets. But, of course, some people would have a territory, then another people would come in and claim it as their own territory because the other people weren't "using" it. This started well before 1492 -- and based on nature, probably began long before the Homo genus ever appeared on Earth.