Which ancient civilization invented the world's first known retail loyalty program, offering clay tokens to repeat customers that could be exchanged for discounts on future purchases?

Long before shopping malls and e-commerce, ancient civilizations developed sophisticated retail systems that revolutionized commerce. Their innovations in marketplace design, trade practices, and customer engagement laid the foundation for modern retail concepts. This poll challenges you to explore how these ancient societies created retail innovations that were so effective that some principles still influence commerce today.

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Ancient Egyptians, through their 'House of Life' marketplace system
Mesopotamian merchants in Babylon, using the 'šubati' token system
Ancient Greeks, through their 'symbola' customer recognition program
Roman Empire shopkeepers, using 'tessera' tokens in specialized markets