What was the first written language in Sumer. Its was invented in order to ...?

The first written language in Sumer was cuneiform, developed around 3200 BCE. It was invented primarily for the purpose of keeping records, particularly for trade, accounting, and administration. The use of cuneiform allowed Sumerians to document economic transactions, legal matters, and historical events, thus facilitating complex societal organization. Over time, it evolved to encompass literature, laws, and scientific texts.