Which ancient civilization pioneered the use of clay seals as 'brand markers' on merchandise packaging to indicate product origin and merchant authenticity?

The marketplaces of ancient civilizations weren't just centers of commerce but cultural hubs that shaped societies. From the agoras of Ancient Greece to the forum of Rome and the bazaars of Mesopotamia, retail operations have evolved over millennia while maintaining certain fundamental principles. Test your knowledge about how our ancestors approached retail packaging and brand recognition in an era before modern marketing techniques!

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Mesopotamia (particularly during the Sumerian and Babylonian periods)
Ancient Egypt (during the New Kingdom era)
Indus Valley Civilization (Harappa and Mohenjo-daro)
Ancient China (during the Zhou Dynasty)