Which ancient civilization first developed the standardized weight system for retail transactions that became the foundation for fair trade practices across the Mediterranean world?

Long before modern e-commerce platforms and digital marketing strategies, ancient civilizations developed sophisticated retail systems that would lay the groundwork for commerce as we know it today. From Mesopotamian bazaars to Roman market halls, these early retail innovations solved unique challenges of their time. This trivia question explores one of history's most significant retail operations innovations that transformed ancient commerce and continues to influence modern retail strategies.

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Mesopotamian (Babylonian) merchants who created the shekel weight standard for consistent pricing of grain, metals, and textiles
Egyptian traders who implemented the deben weight system primarily for gold valuation in royal marketplaces
Phoenician sea merchants who developed the gerah system to standardize prices across their extensive trade routes
Greek agora vendors who introduced the drachma-based weight system for olive oil and wine commerce