Which ancient civilization pioneered the first systematic customer analytics system using 'ostraka' (pottery fragments) to track repeat customers and their preferences?

Before modern retail analytics software, ancient civilizations developed sophisticated methods to track consumer preferences and buying patterns. From Mesopotamian clay tablets recording purchase histories to Roman market research techniques, the foundations of today's retail customer analytics were established thousands of years ago. Test your knowledge about how ancient merchants gathered and used customer data to optimize their businesses!

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Ancient Egyptians, who recorded customer purchases on papyrus scrolls stored in temple archives
Ancient Greeks, who used pottery fragments to record customer names, purchases, and preferences in marketplaces across Athens
Mesopotamians, who pressed cuneiform customer records into clay tablets for Babylonian luxury goods
Ancient Chinese merchants of the Han Dynasty, who used bamboo slips to track loyal silk road customers