Which ancient civilization created the first documented customer loyalty program, offering clay tokens to frequent customers that could be exchanged for discounts on future purchases?

Before modern loyalty cards and digital point systems, ancient civilizations had their own methods of encouraging customer retention and rewarding loyal patrons. These early 'loyalty programs' helped establish trade relationships and build commercial empires. Test your knowledge about the surprising origins of customer loyalty concepts that modern retailers have simply refined rather than invented.

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Ancient Egyptians, who gave papyrus loyalty scrolls to noble customers of royal marketplaces
Ancient Sumerians, who used clay tokens as a form of 'purchase points' for regular customers at urban markets
Ancient Romans, who issued metal tessera tokens to patrician families for preferential treatment at merchants
Ancient Chinese merchants of the Han Dynasty, who maintained bamboo ledgers of loyal customer purchases