Which ancient civilization invented the first known retail price standardization system with fixed pricing in marketplaces?

Before modern shopping malls and e-commerce platforms, ancient civilizations had their own sophisticated retail systems. From the bustling marketplaces of Rome to the complex trade networks of Mesopotamia, retail strategies have evolved over millennia. This trivia challenges you to explore how ancient peoples approached commerce, consumer trends, and retail locations that shaped economies thousands of years ago.

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Ancient Egypt, where the Pharaoh's officials set standard prices for goods in royal marketplaces around 2000 BCE
Babylon under King Hammurabi, whose famous code included regulations for fixed pricing in the marketplace around 1750 BCE
Ancient Greece, where the Agora of Athens implemented standardized pricing during the Golden Age under Pericles (450 BCE)
The Roman Empire, where Emperor Augustus established the first imperial price controls through the Edict of Prices in 14 CE