what is the oldest script of mesopotamia called

The oldest script of Mesopotamia is called cuneiform, which means "wedge-shaped" because people wrote it using a reed stylus cut to make a wedge-shaped mark on a clay tablet. Cuneiform is the earliest known writing system and was originally developed to write the Sumerian language of southern Mesopotamia (modern Iraq) . The first unequivocal written documents start with the Uruk IV period, from circa 3,300 BC, followed by tablets found in Uruk III, Jemdet Nasr, Early Dynastic I Ur and Susa (in Proto-Elamite) dating to the period until circa 2,900 BC. Cuneiform as a robust writing tradition endured 3,000 years and was used by scribes of multiple cultures over that time to write a number of languages other than Sumerian, most notably Akkadian, a Semitic language that was the lingua franca of the Assyrian and Babylonian Empires.