2 Chronicles 36:23 + Ezra 1 report that Cyrus the Great of Persia, after conquering Babylon, permitted Jews in the Babylonian Captivity to return to their homeland. Isaiah had prophesied this (Isa. 44:28). This tolerant policy of the founder of the Persian Empire is borne out by the discovery of a nine-inch clay cylinder found at Babylon 539 BC, which reports Cyrus’s victory and his subsequent policy of permitting Babylonian captives to return to their homes and even rebuild their temples.
The Cyrus Cylinder - laws put into place by Achaemenid king Cyrus the Great after the conquest of Babylon. ((a replica is currently housed in the United Nations building in NYC)) the first charter of right of nations in the world.