> For hunter-gatherer societies there was basically no impulse to fight over territory I'd dispute that. Don't confuse sparse population density with "bountifu

> For hunter-gatherer societies there was basically no impulse to fight over territory I'd dispute that. Don't confuse sparse population density with "bountiful nature"; hunter-gatherer economies are severely limited in that they can only sustainably forage as much as the environment can regenerate. The fact that they're territory-limited rather than labour-limited gives ample incentive to fight over territory, and also explains the popular factoid that these societies had vastly more leisure time than we do.