One can only pity your dreadful ignorance.....The AIT is a dead theory......And neither were the inhabitants of the IVS dravidians....
Genetic evidence has conclusively proved that no large scale migration of central asians took place into India....South Asia constitutes a distinct singular race; yeah the tamil and the punjabi Hindu are of one race [except in N.E where there has been a tibetan influx] Sahoo S et al., Proceedings of the National Academy of Sciences of the USA 2006, Volume 103, pp 843-848. "...The Y-chromosomal data consistently suggest a largely South Asian origin for Indian caste communities and therefore argue against any major influx, from regions north and west of India, of people associated either with the development of agriculture or the spread of the Indo-Aryan language family... It is not necessary...to look beyond South Asia for the origins of the paternal heritage of the majority of Indians at the time of the onset of settled agriculture. The perennial concept of people, language, and agriculture arriving to India together through the northwest corridor does not hold up to close scrutiny..."
Jonathan Mark Kenoyer, the eminent archaeologist found no evidence whatsoever to uphold the AIT...[www.harappa.com] B B Lal, india's foremost archaeologist debunks the myth of the AIT http://www.geocities.com/ifihhome/articles/bbl002.html
And yet you choose to pour your ignorance in this thread......