Which ancient civilization first used standardized 'merchant seals' as a form of commercial branding to authenticate products in long-distance trade networks?

Before modern corporate logos and retail chains, ancient civilizations had their own sophisticated commercial identities. Merchants, artisans, and trading houses used distinctive symbols to mark their goods and establish trust in marketplaces from Rome to Mesopotamia. These early 'brand marks' helped consumers identify quality products and authentic merchants across vast trading networks. Test your knowledge about these fascinating early commercial identities that laid the groundwork for today's global branding practices.

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Ancient Indus Valley (Harappan) Civilization
Ancient Egypt
Ancient Greece
Ancient Rome