Which ancient civilization invented the first form of product branding by stamping distinctive maker's marks on pottery and other goods to establish quality reputation?

Before modern marketing departments and R&D labs, ancient civilizations were creating revolutionary product innovations that shaped commerce and culture. Some ancient product designs were so effective they remained unchanged for centuries or even millennia. This poll explores how ancient societies approached product development and innovation in ways that continue to influence design principles today.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Mesopotamians (circa 3000 BCE), who stamped cylinder seals on clay vessels to identify workshop origin
Ancient Egyptians (circa 2000 BCE), who marked royal cartouches on products made exclusively for pharaohs
Indus Valley craftsmen (circa 2500 BCE), who used pictographic symbols to indicate product contents
Chinese Han Dynasty merchants (circa 200 BCE), who used silk stamps to authenticate luxury trade goods