Two questions of the present society: the unequal relationship between men and women, and the types of family established, for the analysis, is taken up the research of Federico Engels, “The Origin of the Family, Private Property and the State†, which Allows us to look retrospectively at the formation of the human race, its first forms of family, of social, sexual relationships and how this has been the basis of what we have now.Dos interrogantes de la sociedad actual: la relación desigual entre hombres y mujeres, y los tipos de familia establecidos, para el análisis, se retoma la investigación de Federico Engels, “El Origen de la Familia, la Propiedad Privada y el Estado”, que permite mirar retrospectivamente la formación del género humano, sus primeras formas de familia, de relacionamiento social, sexual y cómo esto ha sido la base de lo que tenemos ahora.