Sure, the rule of force is a law of nature, but not the only one. Finding and preserving an ecological niche in which to flourish is more the rule than force. Also, other species don't colonize an area, cut down all the trees, slaughter the indigenous animalia into extinction, pollute streams and lakes and the air itself, overpopulate it to the point of exhausting available resources, and then justify the omnicide in the name of "progress".  

Civilized humans have always figured human "difference" from the rest of nature in terms of self-knowledge, however. And this difference has been trumpeted by civilized humans as a basis for religion, science, commerce, technology economics . . .    What you're saying is that Europeans can be forgiven for the genocide of the First Nations because they were only acting naturally. 

That's a radical idea--perhaps the most radical idea imaginable--albeit perhaps a bit too convenient given the history since Columbus.