November 24th is World Evolution Day. It is celebrated because 161 years ago, a paper was published that changed scientific thinking completely. On November 24, 1859, Charles Darwin published his work: On the Origin of Species by Means of Natural Selection; an account of the greatest story ever told — that of evolution by natural selection.
Just like Europe, South Asians too are descended from diverse people. The end result is messy, complicated mixtures that have resulted in a diversity of languages and cultures.