What tools did the sumerians use to keep track of trade?

The Sumerians used clay tablets and cuneiform writing to keep track of trade transactions. They created detailed records of goods exchanged, quantities, and parties involved, which were inscribed on these tablets. Additionally, they developed accounting methods, such as using tokens and tally systems, to manage trade efficiently in their bustling marketplaces. These tools were essential for maintaining economic organization in their advanced society.