Mesopotamian religion refers to the religious beliefs and practices of the civilizations of ancient Mesopotamia, particularly Sumer, Akkad, Assyria and Babylonia between circa 3500 BC and 400 AD, after which they largely gave way to Syriac Christianity. A few traces remained among Assyrian communities in isolated pockets of what had been Assyria until the 10th century AD, with the very latest attestation being found in this region in the 16th century AD.[1] The religious development of Mesopotamia and Mesopotamian culture in general was not particularly influenced by the movements of the various peoples into and throughout the area, particularly the south. Rather, Mesopotamian religion was a consistent and coherent tradition which adapted to the internal needs of its adherents over millennia of development.[2]