Describe sexism development and give some example from the past

Sexism is a thing where 2 groups of genders (female and male) are made into categories where society makes stereotypes. Like back then where women would be considered less strong than men, or men are smarter than woman. It’s all based upon what opinions you make, not just what everyone thinks it’s what one giant group of people think the same thing so now it is a stereotype. (i made this.. use it well✨)