Following unsuccessful attempts to keep the descendants of Nebuchadnezzar II on the throne, the usurper Nabonidus became king. Persian tribes had moved into Elamite lands, and the Medes made Harran a dangerous city; Nabonidus‘ mother, an aged acolyte of Ashurbanipal, resided there. His lengthy inscriptions are informative about his deeds and his character. He dedicated his daughter to the Moon-god at Ur according to precedent, and spent ten years in Arabia, leaving his son Belshazzar in charge in Babylon. He returned and restored the temple in Harran. Cyrus the Great brought his rule to an end, but continued to employ some high officials. Cyrus was probably of mixed Elamite and Persian descent. The Cyrus Cylinder, inscribed in Babylonian cuneiform for a Babylonian audience, used traditional denigration of the previous king Nabonidus, and acknowledged Marduk as Babylon’s god. In another cuneiform text, Nabonidus was mocked for his scholarly pretensions and for sacrilegious acts. Babylon continued to be the centre where all subsequent kings felt obliged to celebrate the New Year festival to be accepted as legitimate rulers. Old monuments were not defaced. Cyrus may have been responsible for an imitation of Babylon’s glazed bricks at Persepolis. He made his son Cambyses co-regent.

Hard times for Babylon followed the end of the First Dynasty; but records of two Sealand kings, and the account of magnificent rebuilding of Marduk’s temple by a Kassite king imply wealth and energy. Glass production brought a new source of wealth, and horses were bred for chariots. Marduk was still the supreme god. The top status of the Kassite kings in Babylon was recognized by the pharaohs in Egypt. There cuneiform was used for international correspondence and Babylonian literature used to train local scribes. Foreign wives were taken from Elamite, Assyrian, and Hittite royalty. A top scribe from Babylon served in Assyria, and literature flourished. Boulders recording donations of land were carved with texts and celestial motifs. The office of eunuch is discussed. The Assyrian king raided Babylon, looting literary tablets among other valuables. He took over rule of Bahrain to access Gulf trade. The Kassite kings soon resumed the dynasty but the Elamite king raided and in turn took huge amounts of booty. In the next dynasty, the great Nebuchadnezzar I defeated Elam and wrote a heroic account. As a result of tribal incursions by Arameans, the Aramaic language began to spread, and camels trained for transport opened up desert trade. A library already existed in Babylon.