>>1196It's known that they were better fed on average but they had fewer resources outside of food as well, after all you cant have bronze artefacts if you can't work bronze. A lack of such artefacts and the prehistoric nature in general does make it harder to tell just how egalitarian or not they were but once we reach the age where they have those resources we reach the age where burial sites of important people with lots of them are found, indicating that they were not so egalitarian. But even so, even in non-metal working societies, there is almost always a chief or something similar, we see that in the anthropological record all the time. And yes war existed and it was far worse and far more brutal with cannibalism being the norm.
>>1197There are plenty of civilizations that have gone beyond the tribal age in tropical areas and plenty that have stayed in the tribal stage outside of it. I don't think it has that much to do with it and could even be argued against, an abundance of food generally pushes society forwards not backwards as people find it easier to do things other than search for it. Tropical tribes tend to be less well fed than our own prehistoric ancestors as well.