Which ancient civilization is credited with creating the world's first systematic use of merchant seals as a form of brand recognition for customers to identify authentic goods in marketplaces?

Before modern logos and trademarks, ancient civilizations developed sophisticated methods to distinguish products in their marketplaces. From pottery maker's marks to royal seals, these early forms of brand recognition helped ensure quality and authenticity in ancient commerce. Test your knowledge about how our ancestors identified trusted merchants and products in the bustling marketplaces of antiquity!

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Mesopotamia (specifically the Sumerians, circa 3500 BCE)
Ancient Egypt (during the Old Kingdom period)
Indus Valley Civilization (Harappan culture)
Ancient China (Shang Dynasty)