Which ancient civilization first developed a standardized retail pricing system using price tags on goods in marketplaces?

Before digital payments and modern commerce, ancient civilizations developed sophisticated systems for trade and commerce. Their innovations in retail technology—from standardized weights to complex accounting systems—laid the foundation for today's commerce. This poll explores how ancient societies solved retail challenges with technological advancements of their era. Test your knowledge about these fascinating early retail technologies that bridged the gap between simple barter and organized commerce.

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Ancient Rome with their 'mercatus' system of marked prices on goods in the Forum markets
Mesopotamia, where Babylonian merchants attached clay tablets with cuneiform prices to trade goods
Ancient Egypt, where papyrus price markers were attached to goods in royal bazaars
Ancient Greece, where merchants in the Agora used painted pottery shards as price indicators