why did the sumerians originally use cuneiform

The Sumerians originally used cuneiform because they needed a system of writing to record and keep track of various administrative, economic, and religious activities. Cuneiform was ideally suited for this purpose as it allowed for the representation of multiple languages and could be used to write a wide range of subjects including laws, records, myths, and literature. It provided a way to store and retrieve information efficiently and accurately, allowing for better communication and the preservation of knowledge.