When the Aryans from such as the kingdom of Aria (Hari-Rud/Herat river valley) moved into India as the Ice Age was ending, they drove-out the dark-skin Kushites of the Indus Valley Civilization who moved to the south and east. Today they are known as the Dalits, the Untouchables, of the bottom caste in the Hindus’ system for the classification of the Indian people.
