Which ancient civilization first used standardized 'brand seals' on trade goods to guarantee quality and origin, creating one of history's earliest formal product authentication systems?

Before modern logos and trademarks, ancient civilizations developed sophisticated brand identities to mark their products, denote authority, and distinguish their goods in trade networks spanning continents. From potter's marks in Mesopotamia to royal seals in Egypt, these early branding elements served many of the same purposes as today's corporate identities. Test your knowledge about how ancient societies branded their commercial and cultural outputs!

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Indus Valley Civilization (with uniform square seals featuring animals and script)
Ancient Rome (with maker's marks stamped on pottery and amphorae)
Han Dynasty China (with imperial quality control seals)
Minoan Crete (with clay seal impressions for palace goods)