Which ancient civilization pioneered the first known planned retail layout with standardized shop sizes and a grid system to maximize foot traffic and shopping efficiency?

Before modern shopping malls and e-commerce, ancient civilizations created sophisticated retail systems that shaped how we buy and sell today. From the grand bazaars of Mesopotamia to Roman shopping complexes, retail layouts and merchandising strategies have ancient roots. This trivia explores how ancient civilizations designed their marketplaces to influence consumer behavior - an early form of retail psychology that still echoes in modern store designs.

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The Roman Empire with their multi-story shopping complex called Trajan's Market
Ancient Egypt with their riverside market halls along the Nile
Ancient Greece with their centralized agora marketplace system
The Indus Valley Civilization with their grid-based trading centers