Cyrus II of Persia (c. 600–530 BC; Old Persian: 𐎤𐎢𐎽𐎢𐏁 Kūruš), commonly known as Cyrus the Great and also called Cyrus the Elder by the Greeks, was the founder of the Achaemenid Empire, the first Persian empire. Under his rule, the empire embraced all of the previous civilized states of the ancient Near East, expanded vastly and eventually conquered most of Western Asia and much of Central Asia. Spanning from the Mediterranean Sea and Hellespont in the west to the Indus River in the east, the empire created by Cyrus was the largest the world had yet seen. At its maximum extent under his successors, the Achaemenid Empire stretched from parts of the Balkans (Eastern Bulgaria–Paeonia and Thrace–Macedonia) and Southeast Europe proper in the west to the Indus Valley in the east. The reign of Cyrus lasted about thirty years; his empire took root with his conquest of the Median Empire followed by the Lydian Empire and eventually the Neo-Babylonian Empire. He also led an expedition...