Which ancient civilization pioneered the earliest known form of customer feedback by having merchants record buyer preferences in clay tablets to better stock their inventory?

The ancient world had sophisticated retail systems that shaped economies and cultures. From the Agoras of Greece to the Forum of Rome, marketplaces weren't just places of commerce but centers of social life and innovation. Ancient merchants were remarkably advanced in understanding customer preferences, retail branding, and product development. This poll explores how ancient civilizations approached retail customer insights centuries before modern market research.

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Mesopotamians (circa 3000 BCE)
Ancient Egyptians (circa 2500 BCE)
Indus Valley traders (circa 2300 BCE)
Phoenician merchants (circa 1500 BCE)