The blending of the Andite conquerors of India with the native stock eventually resulted in that mixed people which has been called Dravidian. These Andites were the so-called Dravidian and later Aryan conquerors of India.  The Dravidians were among the earliest peoples to build cities and to engage in an extensive export and import business, both by land and sea. 
The Dravidian centers of culture were located in the river valleys, principally of the Indus and Ganges, and in the Deccan along the three great rivers flowing through the Eastern Ghats to the sea.  They founded a superior civilization 12,000 years ago. 
See also: UB 79:3.