Whole world agree that Aryan race is attached with Horse.
Horse was missing from any historical facts in dravid civilization. So how budha and mahavira can be kshatariyas, there was no caste system prior to brahminic intrusion. In Dravid system there was no caste theory. Can you tell me how and when and who were Shudras or dalit, how they become shudras? Dravids became shudras since brahmins wanted to control their property, temples and business.