Which ancient civilization first invented a standardized currency system with government-issued coins of guaranteed weight and purity, revolutionizing retail payment systems around 600 BCE?

Long before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail strategies and payment systems. These early commercial innovations laid the foundation for today's global trade networks. Test your knowledge about the fascinating retail payment systems used by merchants thousands of years ago!

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Lydians (in modern-day Turkey)
Egyptians
Mesopotamians
Chinese Zhou Dynasty