Which historical civilization implemented one of the first documented customer loyalty programs where merchants gave clay tokens to regular customers that could be exchanged for goods?

Throughout history, merchants and artisans have developed various strategies to maintain customer loyalty. From ancient Roman shopkeeper guilds to medieval tradesman marks, the concept of brand loyalty has deep historical roots. This poll explores a fascinating historical practice that represents one of the earliest documented examples of a formalized customer loyalty program. Test your knowledge about how merchants in the past maintained their customer base!

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Ancient Babylon (circa 1800 BCE)
Imperial Rome (circa 100 CE)
Tang Dynasty China (circa 700 CE)
Medieval Venice (circa 1300 CE)