Which ancient civilization created the world's first known 'department store' concept with specialized sections for different goods under one roof?

Consumer behavior and retail operations have ancient roots! Long before modern shopping malls, ancient civilizations developed sophisticated marketplaces and trading systems. From Mesopotamian bazaars to Roman shopping districts, the fundamentals of retail were established thousands of years ago. This poll explores how ancient civilizations approached commerce and the surprising innovations they developed that still influence modern retail concepts.

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Ancient Rome (Trajan's Market with over 150 shops arranged in specialized departments)
Ancient Egypt (The Royal Markets of Thebes with dedicated areas for luxury goods, spices, and textiles)
Ancient China (Han Dynasty commercial complexes featuring specialized merchant guilds)
Ancient Greece (The Agora of Athens with its stoa buildings housing different merchant categories)