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.
One of the things still used by people daily is the concept of an hour being 60 minutes, along with the number of degrees of a circle, which was a product of the Sumerians. The Akkadians were one of the first to make new changes to the political system and introduced a clear separation between church and state. There were numerous other accomplishments by the people in the Mesopotamian area. They found that mixing select metals created bronze, which in turn produces new weapons and tools. The Assyrians were great engineers and created numerous buildings and gardens that hadn't existed before them. This part of the world also is the birthplace of bricks and the use of them as a building material all along the Mesopotamian area. They were often used for palaces or religious buildings.