What primary function did cylinder seals serve for Mesopotamian merchants that most closely resembles modern brand identity protection?

In the ancient world, merchants and rulers faced many of the same branding challenges as modern businesses. The Mesopotamians developed one of history's earliest systems of brand identity through cylinder seals - intricate carved cylinders that created unique impressions in clay tablets. These seals served as signatures, ownership marks, and protected goods from tampering - much like modern brand identities and packaging security features. Test your knowledge about these ancient branding tools!

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They authenticated the origin of goods and prevented counterfeit products by leaving unique impressions that couldn't be easily replicated
They were primarily decorative status symbols with no practical business function
They served only as religious talismans to invoke divine protection over trade caravans
They were exclusively used by royalty to mark personal possessions and had no commercial applications