Why was population density low? Perhaps even a small clan would need a wide territory to hunt/gather what they possibly could. Neandertals may very well have ha

Why was population density low? Perhaps even a small clan would need a wide territory to hunt/gather what they possibly could. Neandertals may very well have had greater caloric needs than early homo-sapiens. Territorial conflicts could be quite common if a tribe required a large area, more chance of it coinciding with another's territory. One could speculate maybe that could be what the cro-magnon special sauce was. The ability to survive off of smaller territories - or feed a greater population off of the same.