What ancient civilization created the earliest known systematic customer feedback system through 'kudurru' stones displayed in marketplaces around 1750 BCE?

While modern businesses use surveys and social media to collect customer feedback, ancient civilizations had their own methods of gathering consumer opinions. From Mesopotamian clay tablets recording customer complaints to Roman recommendation systems, these early feedback mechanisms shaped commerce for millennia. Test your knowledge about how our ancestors handled the earliest forms of 'customer satisfaction' and product quality control!

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Babylonian Empire under Hammurabi
Egyptian Old Kingdom under Pharaoh Khufu
Phoenician trading colonies
Indus Valley civilization at Mohenjo-daro