Which ancient civilization first developed a sophisticated retail recommendation system through 'customer tablets' that tracked previous purchases and suggested new products?

The ancient world wasn't just about monuments and wars - it was home to sophisticated commercial systems that laid the groundwork for modern retail. From the agoras of Greece to the forums of Rome and the bazaars of Mesopotamia, ancient civilizations pioneered retail concepts we still use today. This poll explores how these early societies innovated in commerce, customer experience, and brand positioning thousands of years before modern marketing textbooks were written.

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Babylonian merchants, who kept clay tablets recording customer preferences to suggest oils, textiles and spices based on past purchases
Egyptian retailers, who used papyrus scrolls to track noble families' purchases and recommend luxury goods appropriate to their social status
Roman forum shopkeepers, who employed nomenclators (memory slaves) to remember regular customers' preferences and make personalized suggestions
Chinese Han Dynasty silk merchants, who maintained bamboo records of client preferences to suggest complementary textiles and accessories