Which ancient civilization first developed a form of 'brand seal' on products to guarantee authenticity and create consumer trust?

The ancient world featured sophisticated commercial networks and product development methods that still influence modern retail practices. From the ingenious water-cooling systems of Mesopotamian markets to the brand identifications used by Roman merchants, ancient civilizations pioneered retail concepts we consider innovative today. Test your knowledge of how our ancestors approached product development and consumer psychology in the earliest marketplaces of human civilization.

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Mesopotamians, who stamped clay tablets with cylinder seals to authenticate goods in trade networks across the Fertile Crescent
Ancient Egyptians, who marked papyrus scrolls with royal cartouches to indicate pharaonic approval of marketplace goods
Ancient Greeks, who stamped amphora with city-state emblems to indicate the origin and quality of olive oil and wine
Indus Valley merchants, who used carved stone seals on cotton textiles to mark premium goods for export to Mesopotamia