Which ancient civilization first implemented standardized weights and measures for retail transactions, creating one of history's earliest consumer protection systems?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail systems that laid the foundation for today's commercial practices. From Mesopotamian bazaars to Roman shopping complexes, the history of retail spans thousands of years. This trivia question explores a fascinating innovation in ancient retail operations that revolutionized commerce and influenced trading practices for centuries to come. Test your knowledge about the earliest retail innovations that shaped human economic history!

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Indus Valley Civilization (c. 3300-1300 BCE), with their precisely crafted cubic stone weights
Ancient Egypt (c. 3100 BCE), with their nilometer-based measurement system
Phoenician traders (c. 1500 BCE), with their merchant guild standards
Minoan Civilization (c. 2000 BCE), with their palace-administered measurement protocols