What system or writing involves wedge shaped writing on clay tablets?

The system of writing that involves wedge-shaped characters inscribed on clay tablets is called cuneiform. It originated in ancient Mesopotamia around 3200 BCE and was used for various languages, including Sumerian and Akkadian. Cuneiform is one of the earliest forms of writing and was primarily used for record-keeping, legal documents, and literature. The name "cuneiform" itself derives from the Latin Word "cuneus," meaning "wedge."