Which innovative advertising technique did ancient Egyptian merchants commonly use to promote their products around 1500 BCE?

Before billboards, TV commercials, and Instagram ads, ancient civilizations had their own ingenious methods of product promotion and brand identity. From town criers in Mesopotamia to painted advertisements on Roman walls, the foundations of modern marketing were laid thousands of years ago. This trivia question explores how ancient Egyptians, known for their sophisticated commercial systems, advertised their products and services in a world without digital media or mass printing.

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Hiring professional announcers to walk through marketplaces shouting product benefits and merchant locations
Carving product reviews into small limestone tablets that were distributed at city gates
Creating branded papyrus scrolls with product illustrations that were posted in public spaces
Training birds to repeat product slogans while flying over crowded areas