Which ancient civilization is credited with creating the world's first standardized retail pricing system using fixed price tags around 2000 BCE?

Before modern shopping malls and e-commerce, ancient civilizations created sophisticated retail systems. From Mesopotamian bazaars to Roman macella (food markets), these early retail innovations established trading principles still used today. This poll tests your knowledge about one of history's most significant retail developments that transformed how people bought and sold goods in antiquity.

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Ancient Babylonians, who used clay tablets with standardized prices for common goods in their markets
Ancient Egyptians, who introduced papyrus price lists for goods sold along the Nile
Phoenicians, who developed the first merchant price codes for Mediterranean trade
The Indus Valley civilization, whose merchants used uniform pricing stamps on pottery containers