Which innovative retail display technique did ancient Egyptian merchants pioneer around 1500 BCE that revolutionized product presentation and is still used in modern stores?

The ancient world wasn't just about monuments and warfare - it was also home to sophisticated commercial systems that laid the groundwork for modern retail. From the agoras of Greece to the forums of Rome and the bazaars of Mesopotamia, ancient civilizations developed remarkably advanced retail operations. This trivia question explores how ancient Egyptians revolutionized product design and retail display techniques in ways that still influence modern merchandising practices.

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The use of shelving systems organized by product category
Interactive product demonstrations with trained sales representatives
Digital inventory management using hieroglyphic tablets
Seasonal rotation of merchandise based on religious festivals