Which ancient civilization invented the first known retail price tags, attaching clay tablets with fixed prices to merchandise around 3000 BCE?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail systems that laid the groundwork for today's commerce. From the agoras of Ancient Greece to the forums of Rome and the bazaars of Mesopotamia, retail innovation has a history spanning millennia. Test your knowledge about how our ancestors revolutionized the exchange of goods and created the foundations of modern retail practices.

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Mesopotamian Sumerians
Ancient Egyptians
Phoenician merchants
Indus Valley traders