Which ancient civilization is credited with inventing the first systematic use of merchant seals as a form of brand recognition for traded goods?

Before modern logos and trademarks, ancient civilizations had their own methods of product identification and brand recognition. Craftsmen, merchants, and traders developed unique ways to distinguish their goods from competitors and build reputation across vast trade networks. This poll explores how ancient cultures approached what we now call 'branding' and product identification in marketplaces from Rome to China.

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Ancient Mesopotamia (specifically the Sumerians)
Ancient Egypt
Ancient Rome
Han Dynasty China