Which ancient civilization pioneered the use of standardized clay seals as 'brand marks' on merchandise to guarantee quality and authenticity to distant customers?

Before digital billboards and social media campaigns, ancient civilizations developed sophisticated methods to advertise their products and services. From town criers in Mesopotamia to painted signs in Pompeii, marketing has ancient roots. Test your knowledge about how merchants in antiquity promoted their goods and attracted customers in bustling marketplaces from Rome to China.

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Indus Valley Civilization (Harappa and Mohenjo-daro)
Ancient Egypt under the New Kingdom pharaohs
Classical Athens during the Golden Age of Pericles
The Phoenician trading networks of the Mediterranean