Which ancient civilization first used standardized seals on merchandise as a form of brand identification and quality assurance for long-distance trade?

Before modern logos and taglines, ancient civilizations developed sophisticated commercial identities through symbols, marks, and reputation. Merchants in major ancient trading hubs created recognizable brand identities that helped consumers identify authentic goods and establish trust. This poll explores how ancient civilizations approached what we now call 'branding' in their commercial activities and marketplaces.

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Indus Valley Civilization (c. 2600-1900 BCE)
Ancient Egypt (c. 3100-30 BCE)
Mesopotamia/Sumer (c. 4500-1900 BCE)
Ancient Greece (c. 800-146 BCE)