Which ancient civilization pioneered the earliest known form of customer loyalty tracking by using clay tablets that recorded repeated purchases from specific customers?

Before modern retail analytics, ancient civilizations had their own ways of tracking consumer preferences and market trends. From early trade records to marketplace organization, these ancient practices laid the foundation for today's market research methods. This trivia explores how ancient peoples collected and utilized consumer data in surprising ways that parallel our modern approaches to retail analytics.

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Mesopotamians in Babylonian marketplaces (circa 1800 BCE)
Egyptian merchants along the Nile trade routes (circa 1500 BCE)
Phoenician maritime traders in Mediterranean ports (circa 1200 BCE)
Chinese silk road merchants during the Han Dynasty (circa 200 BCE)