Which ancient civilization first used standardized clay seals with distinct symbols as 'brand marks' on traded goods to indicate their origin and quality?

Before modern logos and brand identities, ancient civilizations developed sophisticated systems to mark and identify goods in their marketplaces. Merchants used symbols to distinguish their products, build reputation, and establish trust with customers across vast trade networks. These early 'brand marks' played crucial roles in the ancient economy and laid foundations for modern corporate identity practices. Test your knowledge about these fascinating early commercial identifiers!

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Ancient Egyptians (circa 3100 BCE)
Indus Valley Civilization (circa 2600 BCE)
Ancient Romans (circa 750 BCE)
Ancient Chinese Shang Dynasty (circa 1600 BCE)