Cyrus the Great (c. 600–530 BC; Old Persian: 𐎤𐎢𐎽𐎢𐏁 Kūruš),[a] commonly known as Cyrus the Great,[4] was the founder of the Achaemenid Empire, the first Persian empire.[5] Under his rule, the empire embraced all of the previous civilized states of the ancient Near East,[5] 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.[6] 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. He freed 20000 Jewish slaves after the conquest of Babel (great country in 600-1000 BC)