Research shows that sex categorization unconsciously primes gender stereotypes, as reported by Stanford University. The desire to remain changeless from older tradition, the assigning of genders to certain fields, cultural conditioning and historical bias towards one sex are all underlying causes of continued gender discrimination in everything from the roles of women at home to the ability of women to advance in the workplace.
Gender discrimination is directly influenced by the historical and structural power imbalances between women and men which exist in varying degrees across all communities in the world, notes the Virtual Knowledge Centre to End Violence Against Women and Girls.
Historically, men have always had a bigger role when it comes to power overall, which lead to a set mindset that women could not be in those positions. With women's rights being so new, only really developing in the 19th and 20th centuries, people just aren't used to seeing women as being equal to men because women were always the home bodies who made the bread that the man went out and won. Historically, women were underrepresented in the workplace, athletics and academics.
In many countries, people still dread the idea of having a daughter because girls are seen as a financial burden, stated by Advocates for Youth. Money is still often passed down through birth of a son, as a girl's wealth will be given to her husband, taking it from the family.