Which ancient civilization invented the world's first known retail shopping complex with standardized store layouts and visual merchandising techniques?

Before modern shopping malls and e-commerce, ancient civilizations developed sophisticated retail systems that formed the foundation of commerce as we know it today. From Mesopotamian bazaars to Roman shopping complexes, these early retail innovations revolutionized how goods were traded and displayed. This trivia question explores one of the most influential ancient retail innovations that still impacts store layouts and visual merchandising techniques in modern retail.

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Ancient Romans with their multi-story Trajan's Market featuring over 150 standardized shops and organized product categories
Ancient Egyptians with their Nile-adjacent marketplaces featuring hieroglyphic product advertisements and designated merchant stalls
Ancient Greeks with their agora system featuring specialized product zones and sculptural displays for premium goods
Ancient Chinese with their Han Dynasty commerce centers featuring covered walkways and designated import/export sections