“These nomadic hunter-gatherers roamed around to find resources. But as resources became scarce, clans had to find a better way.”

Not sure this is actually the case. Some clans developed agriculture, their reproduction rate increased, the two systems coexisted (and still do) but eventually the agriculturalists out populated the hunter-gatherers. That is when resources started to become an issue…

Still, thanks for the food for thought. Our systems certainly need an overhaul.