Which ancient civilization first used royal endorsements as 'brand ambassadors' for products, with rulers' faces stamped on items to guarantee quality and authenticity?

Before modern advertising and global brands, ancient civilizations developed sophisticated marketing techniques to promote their goods. From stamped pottery in Mesopotamia to branded olive oils in Rome, product differentiation has ancient roots. This poll explores how early civilizations used 'brand ambassadors' - often religious figures or rulers - to promote products and establish trust with consumers. Test your knowledge about these fascinating early marketing strategies that laid the foundation for today's branding practices.

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Ancient Egypt, where pharaohs' cartouches on pottery and goods indicated royal approval
Ancient Greece, where Olympic victors endorsed wine and olive oil amphoras
Ancient Rome, where emperors' profiles on products signified imperial quality standards
Ancient China, where the first emperor Qin Shi Huang standardized weights and measures with his seal