Which ancient civilization pioneered the concept of 'brand loyalty' through the use of merchant seals that guaranteed quality and authenticity of goods across vast trade networks?

In ancient civilizations, rulers and merchants understood the power of brand loyalty long before modern marketing existed. From royal seals to merchant marks, ancient societies developed sophisticated methods to build trust and repeat business. This poll explores how ancient civilizations created and maintained customer loyalty through various brand-building strategies that still influence modern retail practices.

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Mesopotamian civilization, with cylinder seals that merchants used to mark clay tablets as contracts and goods as authentic
Ancient Egypt, with pharaonic cartouches that were licensed to trusted merchants for premium goods
Roman Empire, with the 'Senatus Populusque Romanus' (SPQR) mark that certified official goods throughout the empire
Ancient China, with imperial chops (stamps) that were exclusively granted to merchants who maintained consistent quality