Which ancient civilization first used standardized merchant symbols (similar to modern logos) to establish trust and recognition for specific product sources in marketplaces?

Before modern marketing strategies, ancient civilizations developed sophisticated methods to distinguish their goods in bustling marketplaces. From Egyptian merchant seals to Roman storefront mosaics, product positioning has ancient roots. This poll explores how ancient merchants created unique market positions thousands of years before modern branding concepts emerged. Test your knowledge about how early civilizations approached what we now call 'brand positioning' in their commercial activities.

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Mesopotamian (Sumerian) merchants, who stamped clay tablets with cylinder seals to authenticate goods around 3500 BCE
Ancient Egyptian traders, who painted hieroglyphic symbols on pottery to indicate workshop origins around 3000 BCE
Phoenician merchants, who developed a system of colored flags to identify their market stalls around 1200 BCE
Greek agora sellers, who carved distinctive symbols on stone tokens given with purchases around 800 BCE