Which ancient retail innovation was first used in Roman markets to create customer loyalty programs?

The ancient world had sophisticated commercial systems long before modern retail. From Mesopotamian clay tablets tracking inventory to Roman shopping complexes, ancient civilizations developed remarkable innovations in trade and commerce. Test your knowledge about how these early retail systems operated and how they influenced the customer experience in the ancient world.

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Tessera - clay tokens that customers collected to receive discounts on future purchases
Ostraka - pottery shards that tracked customer preferences and recommended similar goods
Tabula Cerata - wax tablets that merchants used to record regular customers' previous orders
Sigillum - personalized stamps that wealthy patrons used to mark reserved premium merchandise