Which ancient civilization pioneered the concept of 'retail branding' by requiring merchants to stamp their unique seals on products as a guarantee of quality and origin?

The marketplaces of ancient civilizations were sophisticated commercial centers that pioneered many retail concepts we still use today. From the agoras of Ancient Greece to the forums of Rome and the grand bazaars of Mesopotamia, these early retail environments established fundamental business practices that have evolved into modern commerce. Test your knowledge about these ancient retail innovations that shaped how humans have conducted trade for millennia.

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Mesopotamia (specifically Babylonians)
Ancient Egypt
Ancient Greece
Indus Valley Civilization