You see, you got offended. One can't draw a clear racial line between Aryans and Dravidians, but going by the Aryan migration theory, there was a time when these two races existed in their purer forms.
Thanks for your interest in trying to educate me, but I do know all there is to know about language families. But where do you think the linguistic differences originate? For the love of God, just *think* this once!
South Asians, in general, prefer Aryan phenotypes and despise Dravidian ones. Bengalis carry mostly Dravidian genes, and it's funny to observe the defensive reactions when they're called Dravidians. I urge you to take it easy!
[/B]