Gender has biological roots.
In our species, the males tend to be larger, stronger. Males lack breasts, which make them better at throwing rocks and spears. Males have more narrow hips, which make them more efficient runners.
The females of our species are burdened with the reproductive systems that carry their young for rather long gestational periods and they are burdened with the task of feeding those young.
As a result, activities that took place away from our prehistoric campfires like hunting, gathering and tribal war were better left to males. And activities that took place near our prehistoric campfires like rearing young were better left to females.
Biologically, males and females are not “equals”. They’re adapted for different tasks. Thus the rise of gender roles in prehistoric society.
But I’ll answer no more on this here. We can start a new thread if you wish.