Buddha's religion is fundamentally a religion of Indus Valley Civilization

Re: Buddha’s religion is fundamentally a religion of Indus Valley Civilization

The Mahabharata predates Buddhism by a large period. Whatever the reason, the inhabitants were “looked down upon” during Mahabharata times was not due to Buddhism even Shramana beliefs. During the Mahabharata times, these regions both North East and Gandhara were related by marriage to the Pandavas and Kauravas.

Buddhism did not evolve from Vedic religions in any part of the subcontinent. Do you have any proof or links pointing to that fact.