The Middle Babylonian period, also known as the Kassite period, in southern Mesopotamia is dated from c. 1595 BC to 1155 BC and began after the Hittites sacked the city of Babylon. The Kassites, whose dynasty is synonymous with the period, eventually assumed political control over the region and consolidated their power by subjugating the Sealand dynasty in 1475 BC. After the subjugation of the Sealand dynasty, the Kassites unified the region of Babylonia into a single political entity. At the height of the Middle Babylonian period, the Kassite kings were engaging in commerce, trade, and organising diplomatic marriages with the kings of Egypt and other regional powers. However, after a period of gradual decline, the Middle Babylonian period collapsed with the fall of the Kassite dynasty in