Which ancient civilization pioneered an early 'customer feedback' system where merchants placed colored stones in urns to track buyer preferences for different goods?

The ancient world was home to sophisticated commercial systems long before modern retail. From Mesopotamian clay tablets recording inventory to Roman market stalls with specialized point-of-sale methods, our commercial ancestors were surprisingly advanced. This poll explores how ancient civilizations handled consumer feedback and market research - practices that helped shape products and trade for centuries. Test your knowledge of these early commercial innovations!

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Phoenicians, who used this data to determine which trade goods to bring to different Mediterranean ports
Egyptians, who collected feedback in temple marketplaces to ensure pharaohs received the most desired luxury goods
Aztecs, who used the system to track preferences in their floating garden markets in Tenochtitlan
Greeks, who institutionalized the practice in their agora marketplaces to settle merchant disputes