How was Persia formed?

The Persian state arose in the 6th century BC, when Cyrus the Great came to power, he was the ancestor of the Achaemenid dynasty. In fact, he was able to create the greatest empire that stretched from the Indus River to the Aegean Sea. For two centuries, the Persian kings were able to seize vast territories and conquer many peoples. The last king of Persia was Darius III, who was defeated by Alexander the Great in the 4th century BC. At the same time, the entire territory of the Persian Empire was captured.