Bronze era Indus Valley Civilisation (2500 BCE – 1500 BCE) at Harappa and Mohenjo-Daro .Waves of conquerors and migrants from the west—including Harappan, Indo-Aryan , Persian , Greek , Saka , Parthian , Kushan , Hephthalite , Afghan , Arab , Turkics and Mughal —settled in the region through out the