Yes. The system of four Varnas like Brahmin, Kshatriya, Vaishya and Shudras was well established at the time of Mahabharata. The Karna was victim of discrimination on the ground of caste in the Mahabharata. In the Gita, Lord Krishna told that He has created four varnas on the basis of his karma. Not on the basis of birth. But the Hindus conveniently overlook the God.
The untouchables are the lowest in the caste.
it affected the caste system by bringing new content to the caste system.
No. but of Hinduism
Buddhism has no belief in caste system. It frankly rejected the caste system.
The Caste System
It is the religion of Hinduism that uses the caste system
certainly Buddhism was opposed to caste system. Hinduism invented caste system.
The group outside the caste system are the untouchables they are'nt considered part of the caste system
The caste system was influenced by the Indian Government
weakening the traditional caste system
best describes the Aryan caste system
priests