grimbletart:
Because women were restricted from education
Because societal rules meant it was incredibly hard to survive without a man, shame, stigma etc. Women were told they were lesser, stupider, weaker, more emotional and less controlled than men by their families, by the church, by doctors and by their peers. Women were lesser beings, hysterical and under the control of their urges and reproductive system. They were also seen as more physiologically vulnerable, girls who studied were putting their future reproductive health at risk for example. Their 'supreme duty' was motherhood and child bearing.
Because women were excluded from the decision making - politicians, lawyers, doctors, philosophers, scientists etc.
Because women got pregnant and a)often died earlier than men, b)spent a significant portion of their lives raising children without the labour saving devices we have now. There are some heartbreaking studies done into female health in the early twentieth century.
Because women could be committed at the whim of their husbands. They could also be cut off without support and with limited means to earn their own money. Their children would stay with the father.
Because women who behaved like men were pathological and wrong. The 'masculine' woman was associated with lesbianism and feminism and was seen as the antithesis of the perfect feminine woman. Feminism was seen by many as the first signs of society breaking down, of people moving out of the places assigned by God and nature. Women who stood up were mocked, taunted, abused and dismissed as hysterical.
Because women could not own, buy or administer property for a long time, all that they owned belonged to their fathers and then their husbands. Then their sons/sons in law.
Because they found it harder to be published and for their voices to be heard.