Don't you think that you must review your facts' authenticity.
1. The latest manuscripts of the rgveda have been estimated to have been written between 1800-1500 b.c. 2. Both Mahavira and Buddha took birth after 700 b.c. 3. The reason behind Buddha and Mahavira preaching in Pali or Prakrit was that Sanskrta has always been complex. Hence couldn't be understood by the common people. Thats why came Prakrit and Pali and even then the search for an easy and common language continued to give birth to Hindi, Panjabi, Marathi,etc. So please review your article once because this information is reaching so many people at a time, let them not be misguided.