It says that a Central Asian pastoral community called Aryans spread out of Central Asia and one of the main branches toppled the existing civilization in India and took it’s place. Based on this, it is postulated that the Aryans spoke in a language which spread all over the area along with them, and with language families like Dravidian and Mundari being remnants of the older inhabitants of the area. Two major facts stated in support of Aryan Invasion Theory is the word Purandara – destroyer of cities and the use of horse. Purandara is one of the names of the primary god of Aryans – Indra. Because he destroyed cities, it is postulated that Aryans didn’t have any cities. But, Rig Veda talks of Indra’s capital city and other cities. As to horses. The discovery of Sivalik Horse should discount the debate over fast moving cavalry which decimated IVC.