Which ancient civilization pioneered the first known standardized product advertising system using branded clay seals to guarantee product authenticity?

Before digital marketplaces and modern retail strategies, ancient civilizations developed sophisticated commercial innovations that shaped human history. The earliest marketplaces weren't just places of exchange but centers of cultural and technological advancement. This poll explores how ancient societies pioneered retail concepts that would influence commerce for millennia to come. Test your knowledge about one of history's most significant retail innovations!

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Mesopotamians (circa 3000 BCE), who stamped clay tablets with merchant seals to verify the origin and quality of traded goods
Ancient Egyptians (circa 2500 BCE), who used papyrus scrolls with hieroglyphic product descriptions and temple endorsements
Indus Valley civilization (circa 2600 BCE), who developed steatite seals with animal imagery to authenticate premium trade items
Ancient Chinese (circa 1500 BCE), who used bronze stamps to mark silk and pottery with producer information and imperial quality ratings