Which ancient civilization invented the first standardized retail pricing system with price tags attached to goods instead of requiring bargaining for every transaction?

Before modern retail, ancient civilizations developed sophisticated commercial systems that laid the groundwork for today's consumer experiences. From the agoras of Greece to the bazaars of Mesopotamia, product innovation and consumer behavior have deep historical roots. Test your knowledge about how our ancestors revolutionized the marketplace thousands of years ago!

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Ancient Romans in their forum markets
Lydians, who also invented the first standardized coinage
Ancient Egyptians in their riverside marketplaces
Phoenicians in their Mediterranean trading posts