Which ancient civilization created the first branded consumer products with manufacturer 'trademarks' stamped on items to guarantee quality and origin?

The ancient world had sophisticated commercial systems long before modern retail. From Roman forums to Chinese silk markets, ancient civilizations developed complex trade networks, branded products, and commercial innovations that would be recognizable to today's business leaders. Test your knowledge about the fascinating world of ancient commerce and discover how many of today's retail concepts have truly ancient roots!

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Ancient Rome, with pottery stamps called 'sigillum' marking official products
Mesopotamia, with cylinder seals on clay tablets marking merchant goods
Ancient Egypt, with cartouche symbols on royal-approved merchandise
Ancient China, with imperial chops on porcelain and silk products