[AutumnCurtain]

With no evidence to offer I strongly suspect this is the biggest piece of it

>And, of course, educated women become able to sell services/goods that allow them to be financially independent, so as to not be coercible.

[lotsofpulp]

I do not see a reason to rank the causal factors, but I can point to a few societies where the women and men are “educated”, but the women lack the rights they have elsewhere (either legally or practically).