[James C. Bennett]

Well Algebra is an arabic derived word... For what they took from the Dravidian cultures which they subsequently destroyed.

Aryan, actually, and one of the mathematician's names - Aryabhatta. See link in my previous comment.

[Noumenon]

Yes, you are correct - I just read about this in Emmet Scott's Mohammed & Charlemagne Revisited, where the author makes a very strong case for the idea that the so-called Dark Ages - from mid 7th century to the end of the 10th - were largely the product of the rise of Islam. They engaged in slaughter, ruin, enslavement and impoverishment everywhere they went. For a time, they appeared to be fabulously wealthy, but that was merely a byproduct of the looting of every civilized place they went.

[muawiyah]

Dravidian culture is still alive and well