Which ancient civilization invented the first known mechanical retail inventory system using clay tokens sealed in bullae (hollow clay balls) as a method of tracking goods in transit?

The ancient world had sophisticated commercial systems long before digital retail. Their supply chain management and consumer behavior patterns reveal fascinating insights into early commerce. Test your knowledge about the technological innovations that ancient civilizations used to enhance their retail operations and manage their marketplace logistics.

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Mesopotamians in Uruk (modern-day Iraq), around 3500 BCE
Ancient Egyptians during the New Kingdom period, around 1500 BCE
Indus Valley traders in Mohenjo-daro, around 2600 BCE
Minoan merchants on Crete, around 2000 BCE