We should first note that the Aryan invasion theory was foreign to the history of India, whether north or south, which has no literary or historical record of any such event. Prior to the invention of the idea by nineteenth century European scholars there was no tradition of an Aryan invasion anywhere in India, in either contemporary or ancient records. The so-called conquering of a subcontinent left no record either in the so-called conquering or conquered people. It vanished without a memory in the entire subcontinent.
If we examine Hindu literature we see that the Vedas show an expansion of civilization both east and west from their most sacred Sarasvati river which flowed west of Delhi, which was also the homeland of Harappan culture. The Puranas show an expansion from the Ganges, the site of later classical Indian culture.
Author : David Frawley