Indian caste system is 2700 years old as per https://en.m.wikipedia.org/wiki/Rigveda https://en.m.wikipedia.org/wiki/Rigveda in https://en.m.wikipedia.org/wiki/

Indian caste system is 2700 years old as per https://en.m.wikipedia.org/wiki/Rigveda https://en.m.wikipedia.org/wiki/Rigveda in https://en.m.wikipedia.org/wiki/Timeline_of_Indian_history https://en.m.wikipedia.org/wiki/Timeline_of_Indian_history