Which ancient civilization invented the first standardized retail pricing system with fixed prices for goods instead of haggling?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail systems that laid the groundwork for today's commercial practices. From bustling marketplaces in Mesopotamia to complex trading networks in Rome, these early retail innovations shaped human history. Test your knowledge about the fascinating retail history of ancient civilizations and discover how their commercial practices continue to influence modern business strategies.

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Ancient Rome, with the Emperor Diocletian's Edict on Maximum Prices (301 CE)
Ancient Egypt, during the New Kingdom period (1550-1070 BCE)
Ancient Greece, under the reforms of Solon in Athens (594 BCE)
Sumerian civilization, in the markets of Ur (2100 BCE)