Which ancient civilization implemented the earliest known formalized customer feedback system for marketplace products?

Before digital reviews and star ratings, ancient civilizations had their own methods of providing and collecting customer feedback about products and services. These early feedback mechanisms helped shape commerce and trade relationships between merchants and consumers, influencing product development and merchant reputation in ways that mirror our modern systems. Test your knowledge about how ancient shoppers shared their opinions!

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Ancient Rome, with their 'Caveat Emptor' tablets where customers could record complaints about merchants and goods
Mesopotamia, where clay tablets from around 1750 BCE recorded customer complaints about copper quality and merchant dishonesty
Ancient Egypt, with their 'Papyrus of Trading Truth' where shoppers rated products using hieroglyphic symbols
Ancient China, where the Han Dynasty introduced bamboo feedback scrolls for recording satisfaction with silk and pottery merchants