Ais a system of social inequality in which people's status is permanently determined at birth based on their parent's ascribed status. it is a closed system of stratification.

The answer would be caste system. This is a type of social stratification described by endogamy, genetic transmission of a way of life which frequently incorporates an occupation, status in a chain of importance, standard social collaboration, and rejection. In spite of the fact that station frameworks exist in different locales, its paradigmatic ethnographic case is the division of Indian culture into inflexible social gatherings, with establishes in India's antiquated history and enduring until today.

So you know what happened and so it doesn’t repeat it’s self