Which ancient civilization first used 'brand seals' on products as a marketing strategy to guarantee quality and establish merchant reputation?

Before modern advertising agencies, ancient civilizations developed sophisticated marketing strategies to promote their products and services. From royal endorsements to symbolic imagery, these early marketing techniques laid the foundation for today's branding concepts. This poll explores how ancient merchants and artisans built customer loyalty and established their 'brands' in marketplaces across early human civilizations.

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Mesopotamia (Ancient Sumerians, c. 3000 BCE)
Ancient Egypt (c. 2500 BCE)
Ancient China (Shang Dynasty, c. 1600 BCE)
Ancient Greece (c. 800 BCE)