Which ancient civilization pioneered the use of cylinder seals as 'logos' for merchants to stamp their goods and clay documents as authentic?

Before modern corporate logos, ancient civilizations used symbols to identify merchants, products, and trading houses. These early 'brand marks' helped distinguish goods in bustling marketplaces from Mesopotamia to Rome. Test your knowledge about these fascinating precursors to modern branding that archaeologists have uncovered on everything from amphoras to merchant seals.

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Mesopotamia (Sumerians)
Ancient Egypt
Indus Valley Civilization
Ancient Greece