Which ancient civilization created the first known branded products with manufacturer marks that served as quality guarantees and were used in extensive trade networks?

While we often think of branding as a modern concept, ancient civilizations pioneered many retail and marketing techniques we still use today. From standardized weights in Mesopotamia to elaborate trade networks in the Roman Empire, ancient merchants developed sophisticated pricing and product strategies. This trivia question explores how ancient civilizations approached one of retail's fundamental concepts: product branding and identity.

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Ancient Egyptians with marked pottery vessels (c. 3100 BCE)
Mesopotamian merchants with cylinder seals (c. 3500 BCE)
Ancient Chinese with stamped porcelain (c. 1600 BCE)
Ancient Greeks with amphora maker's marks (c. 700 BCE)