Which ancient civilization is credited with creating the first widespread system of 'merchant seals' - clay impressions that functioned similarly to modern corporate logos?

Long before modern logos and trademarks, ancient civilizations developed sophisticated systems to mark and identify products. These early forms of branding helped establish trust, indicate origin, and even convey quality standards. From pottery stamps to cylinder seals, these ancient marks represent the earliest foundations of what would eventually evolve into modern corporate identity systems and logos. Test your knowledge about these fascinating early branding practices!

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Mesopotamians (c. 3500 BCE), who used cylinder seals to mark ownership and authenticity of goods
Ancient Egyptians (c. 3100 BCE), who used hieroglyphic cartouches as royal product endorsements
Indus Valley civilization (c. 2500 BCE), who developed square stamp seals for trade goods
Ancient Chinese (c. 1600 BCE), who used oracle bone script marks as quality indicators