Which ancient civilization first used a standardized royal seal across their empire as a consistent 'brand identity' to authenticate official documents and communications?

Before modern logos and brand guidelines, ancient civilizations created powerful visual identities that represented their cultures, values, and authority. These symbols were deliberately designed to communicate specific messages, build recognition, and foster loyalty among citizens and subjects. Test your knowledge about how ancient civilizations approached what we might now call 'brand identity' through their distinctive symbols and visual representations.

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The Persians under Darius I, who implemented the royal seal showing the king hunting lions
The Romans, who used the SPQR symbol (Senatus Populusque Romanus) on all imperial communications
The Egyptians under Ramses II, who standardized the cartouche system for royal identification
The Mycenaeans, who used bull imagery consistently across their administrative clay tablets