Which ancient civilization is credited with inventing the concept of 'brand seals' - distinctive symbols pressed into products like pottery and textiles to identify their workshop of origin?

Before digital storefronts and global supply chains, ancient civilizations developed sophisticated methods of product marketing and commerce. From Mesopotamian clay tablets advertising wares to Egyptian market stalls with distinct branding, these early societies understood the fundamentals of distinguishing products in competitive marketplaces. Test your knowledge about how ancient civilizations marketed their products and created lasting brand identities that archaeologists can still recognize thousands of years later.

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Mesopotamian (specifically Babylonian merchants around 3000 BCE)
Ancient Chinese (Han Dynasty merchants)
Ancient Greek city-states (particularly Athens)
Indus Valley civilization merchants