The Empire' or 'The Kingdom', was the ancient Iranian empire founded by Cyrus the Great in 550 BC; the First Persian Empire. Based in Western Asia, it was the largest empire the world had ever seen at its time, spanning a total of 5.5 million square kilometres (2.1 million square miles) from the Balkans and Egypt in the west to Central Asia and the Indus Valley in the east. The Persian Empire is a large civilization of humans based in Persia. Culminating a powerful nation, the Persians were once enemies of the Indians until a treaty caused a resolution with their conflict.[4]