Which ancient civilization first implemented a standardized store layout system with shops organized by product categories in their marketplace?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail systems that laid the groundwork for today's commerce. From the agoras of Greece to the bazaars of Mesopotamia, retail store layouts evolved to maximize trade efficiency and customer experience. This poll tests your knowledge about how ancient civilizations designed their marketplaces and the innovative retail technologies they pioneered thousands of years before the digital age.

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The Roman Empire with their macellum (market buildings)
Ancient Egypt with their riverfront trading posts
Aztec Empire with their tianguis (open-air markets)
Ancient China with their centralized guild markets