 Much of the archaeological data comes from the Bactria-Margiana Archaeological Complex (BMAC and Indus Valley Civilization) that probably played a key role in early Aryanic civilization in Afghanistan.The Medes, a Western Persian people, arrived from what is today Kurdistan sometime around the 700s BC and came to dominate most of ancient Afghanistan.They were an early tribe that forged the first empire on the present Iranian plateau and were rivals of the Persians whom they initially dominated in the province of Fars to the south.