Which ancient civilization pioneered the world's first known retail price standardization system, where merchants were required by law to use fixed prices rather than haggling?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated marketplaces that revolutionized commerce. These early retail innovations shaped economic systems that would influence trade for millennia. Test your knowledge about the retail innovations that transformed ancient economies and created the foundation for modern commerce practices.

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Ancient Rome with the Edict of Diocletian (301 CE)
Ancient Egypt under Pharaoh Thutmose III (1479-1425 BCE)
Mesopotamian Babylon during Hammurabi's reign (1792-1750 BCE)
Ancient China during the Han Dynasty (206 BCE-220 CE)