Which ancient civilization is credited with inventing the world's first standardized retail pricing system, where goods had fixed prices marked on them rather than being exclusively negotiated?

Before modern shopping malls and online marketplaces, ancient civilizations pioneered sophisticated retail systems that laid the groundwork for commerce as we know it today. From specialized merchant districts to complex trade networks spanning continents, these early retail innovations shaped how goods were bought, sold, and marketed throughout the ancient world. Test your knowledge about one of history's most significant retail developments!

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Ancient Romans with their 'mercatus publicus' system
Ancient Egyptians with their 'shenat' market regulations
Ancient Lydians who pioneered both coinage and fixed pricing
Ancient Chinese with their 'Tang dynasty price edicts'