What Are Some Achievements of Mesopotamian Civilizations?

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The civilizations of the Mesopotamian area, which include the Sumerians, Babylonians, Assyrians and Akkadians, had numerous achievements, such as a form of written communication with pictures, mathematics, trade and astronomy. The Assyrians can claim credit for the first zoo thanks to the rule of King Ashurnasirbal II, along with the first library thanks to a later king named Ashurbanipal. This library is where the Epic of Gilgamesh was stored along with much of the ancient writing of the area.