Which ancient civilization pioneered the first documented customer feedback system using clay tablets where buyers could rate merchant goods?

While we often think of customer feedback as a modern concept, ancient civilizations had sophisticated methods for gathering consumer opinions about products and services. These early feedback systems played a crucial role in commerce development and helped shape market dynamics in early urban centers. Test your knowledge about how ancient merchants collected and utilized customer insights thousands of years ago!

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Mesopotamia (specifically Babylonians around 1750 BCE)
Ancient Egypt (New Kingdom period)
Indus Valley Civilization (Harappan period)
Ancient China (early Zhou Dynasty)