Which ancient civilization invented the first known retail receipt system using clay tablets to record transactions and inventory?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail systems that laid the foundations for today's commercial world. From Mesopotamian marketplaces to Roman shopping complexes, retail innovation has a history spanning thousands of years. Test your knowledge about the retail technologies and innovations of the ancient world that shaped how humans have bought and sold goods throughout history.

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Sumerians in Mesopotamia (circa 3500 BCE)
Ancient Egyptians during the New Kingdom period
Indus Valley civilization merchants
Phoenician trading networks in the Mediterranean