Which ancient civilization invented the first known form of product branding, applying distinctive symbols to goods to indicate their origin and quality?

Before modern shopping malls and e-commerce, ancient civilizations created sophisticated marketplaces and trading systems that laid the foundation for today's retail world. From Mesopotamian clay tablets recording transactions to the complex Roman market networks, product exchange has a fascinating history spanning thousands of years. Test your knowledge about the innovative retail concepts that emerged in ancient times!

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Mesopotamians, who stamped clay tablets with cylinder seals to authenticate products around 4000 BCE
Ancient Egyptians, who marked papyrus scrolls with hieroglyphic symbols to indicate royal ownership around 3000 BCE
Ancient Greeks, who painted distinctive patterns on amphorae to identify wine producers around 800 BCE
Indus Valley merchants, who used standardized weights with animal symbols for trade transactions around 2600 BCE