Which packaging innovation did ancient Egyptian merchants use as an early form of 'brand identity' to distinguish their products in Mediterranean trade around 1500 BCE?

Before modern retail and e-commerce, ancient civilizations developed sophisticated trading systems and marketing techniques. From the grand bazaars of Mesopotamia to the specialized marketplaces of Rome, these societies pioneered retail concepts we still use today. This trivia question explores how ancient Egyptians innovated in product packaging and branding - an early form of retail marketing that helped establish consumer trust across vast trade networks.

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Distinctive clay seals stamped with merchant symbols
Papyrus scrolls listing product ingredients
Color-coded linen wrappings for different product categories
Hieroglyphic advertisements carved onto transport vessels