I would point out that the poor also have been oppressed in feudal and in pre-feudal societies, but I think that's besides the point.
Your assumption of "historically oppressed women" only works if you perceive of women as being told by men how to behave and what to do.
That's wrong. That is a fundamentally wrong understanding of how human societies work.
Men are told how to behave by women and men. Women are told how to behave by women and men.
Society and societal expectations are not something shaped by men. Is the construct of constant negotiations between both males and females.
As with regard to "women being in subordinate roles"; there I suggest you to read more about the dual hierarchies of males and females. Men and women had for a very, very long time separate hierarchies - and to some degree still do. While the male hierarchy is typically oriented out-of-family, female hierarchies are typically oriented into-family.
With the spread of agriculture and the rise of larger societies, the out-of-family hierarchies started to merge, creating larger and larger hierarchies with the family of the topmost male dominating this hierarchy. With time these hierarchies became the framework for legal and male-religious organization. That's why women hat to "break-in" to these hierarchies.
The into-family hierarchies stayed mostly separate, in the household, the tribe and usually didn't expand out of the family. The Mosuo people in China are one notable exception to that "rule".
> Women were also subjected to practices such as foot-binding, female genital mutilation, and forced marriages.
If you do some research you'll find that these things are not forced onto the females by men; they are forced onto the females by females and males. And if you find it abhorable that females' feet were bound - how angry will you be when you hear that most hard labor was forced onto men? Forced onto them by both men and women.
This whole "patriarchy" is really the invention of wealthy, fin de siècle bourgeoisie that was disgusted by the development of universal male suffrage; the rich will never let the poor have a share.