In ancient India, different levels gradually appeared, forming a strict social hierarchy. What's its name?

In ancient India, the caste system was a social system in which slave owners ruled slaves and other working people, and it was a concrete manifestation of class differentiation. The caste system played a role in protecting the privileged status of clan, nobility and slave owners during the formation of the country.

In ancient India, different classes gradually emerged, forming a strict social hierarchy, called caste system.