Which ancient civilization pioneered the first known customer loyalty program, offering clay tokens that could be collected and exchanged for goods?

The ancient world had sophisticated commercial systems long before modern retail. From the bustling markets of Mesopotamia to the trade networks of Rome, civilizations developed innovative product distribution methods that would influence commerce for millennia. This trivia explores how ancient merchants overcame unique challenges in product design and customer loyalty that modern retailers might find surprisingly familiar.

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Ancient Egyptians, who offered papyrus loyalty scrolls to returning customers at marketplace stalls
Mesopotamian merchants, who created stamped clay tablets that regular customers could accumulate and redeem
Roman shopkeepers, who distributed small bronze coins that could be exchanged for discounts on future purchases
Ancient Chinese traders, who used carved jade tokens to track and reward their most valuable customers