By the late third millennium BC, East Semitic languages such as Akkadian and Eblaite, were dominant in Mesopotamia and north east Syria, while West Semitic languages, such as Amorite, Canaanite and Ugaritic, were probably spoken from Syria to the Arabian Peninsula, although Old South Arabian is considered by most people to be a South Semitic language despite the sparsity of data. The Akkadian language of Akkad, Assyria and Babylonia had become the dominant literary language of the Fertile Crescent, using the cuneiform script that was adapted from the Sumerians. The Old Assyrian Empire, Babylonian Empire and in particular the Middle Assyrian Empire (1365-1050 BC), facilitated the use of Akkadian as a lingua franca in many regions outside its homeland. The related, but more sparsely attested, Eblaite disappeared with the city, and Amorite is attested only from proper names in Mesopotamian records.