I've had a Cherokee friend for over 30 years. He can tell you more than I can. According to him over 4 million Indians (every Tribe) inhabited America proper before Europeans got here. Upon completion of the "Indian Wars", 250,000 were left.
This happened with the Aztecs, Aborigginies(sp), others I'm sure.
I'll go with Chocapic this time because dead is dead, and one is not more dead than another, and people (average people) do not make or even know about the decisions of their governments/leaders and should not permanently pay for the sins of previous generations.
We can learn from the past, but we can't change it.
Of course natural barriers (rivers, mountains, deserts, swamps, oceans) make the best fences, and fences make good neighbors.
Many countries were formed with borders on natural barriers, those without have been "Hot" spots for centuries. An insite into human nature there. Unless people are "locked out" they'll figure out a way to, why they have a reason to/right to, come in.

Do you lock your house, vehicle?

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