Which ancient civilization first developed a system of standardized clay tablets as 'receipts' for commercial transactions, creating the world's first documented retail payment system?

Before modern shopping malls and e-commerce, ancient civilizations created sophisticated marketplaces with innovative product distribution systems. The development of retail has roots going back thousands of years, with early civilizations establishing remarkable commercial practices that still influence modern retail concepts. Test your knowledge about a fascinating innovation in ancient retail history that revolutionized commerce and customer engagement in the ancient world.

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Ancient Egyptians with their papyrus transaction records
Mesopotamian Sumerians with their cuneiform clay tablets
Ancient Chinese with their oracle bone record-keeping
Indus Valley merchants with their seal-stamped transaction tokens