Which ancient civilization first developed the concept of 'brand seals' - clay impressions that guaranteed product authenticity and served as early trademarks for merchants?

The ancient world wasn't just about monuments and wars - it was also home to sophisticated commercial systems with innovative product designs and retail strategies that would influence trade for millennia. From the bustling markets of Mesopotamia to Roman shopping complexes, ancient civilizations developed remarkably advanced approaches to commerce. Test your knowledge about these early product and retail innovations that laid the groundwork for modern commerce!

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Mesopotamians (circa 3500 BCE)
Ancient Egyptians (circa 3000 BCE)
Indus Valley civilization (circa 2600 BCE)
Minoans of Crete (circa 2000 BCE)