sentences:  However, the Kassites were—like the Elamites, Gutians and Manneans who preceded them—linguistically "unrelated" to the Iranian-speaking peoples who came to dominate the region a millennium later.They first appeared in the annals of history in the 18th century BC when they attacked Babylonia in the 9th year of the reign of Samsu-iluna (reigned c. 1749–1712 BC), the son of Hammurabi.Samsu-iluna repelled them, as did Abi-Eshuh, but they subsequently gained control of Babylonia c. 1570 BC some 25 years after the fall of Babylon to the Hittites in c. 1595 BC, and went on to conquer the southern part of Mesopotamia, roughly corresponding to ancient Sumer and known as the "Dynasty of the Sealand" by c. 1520 BC.