Which retail technology innovation did Mesopotamian merchants introduce around 3000 BCE that revolutionized marketplace trust and is considered one of the earliest forms of 'product verification'?

The ancient world wasn't just about monuments and wars—it was also home to sophisticated commercial systems! Long before modern retail, ancient civilizations developed complex marketplaces with standardized weights, currencies, and even early forms of consumer protection. This poll explores how ancient Mesopotamia revolutionized retail with one of history's most important commercial innovations. Test your knowledge about the retail technologies that helped build the first urban economies!

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Clay cylinder seals used as unique merchant signatures to authenticate goods and prevent counterfeiting
Papyrus receipts with hieroglyphic product codes that tracked inventory across trade routes
Bronze tokens engraved with product origins that served as early branding tools
Limestone tablets featuring pictographic customer satisfaction ratings for merchant stalls