Which ancient civilization first developed a formal market segmentation strategy by dividing their grand bazaars into specific sections for different social classes?

Before modern marketing analytics existed, ancient civilizations developed sophisticated approaches to retail segmentation. Different market stalls, bazaars and trading posts catered to specific customer groups based on wealth, social status, and needs. This poll explores one of the earliest documented examples of strategic market segmentation that influenced retail practices for centuries to come.

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Persians (Achaemenid Empire), who created separate marketplace quarters with distinct pricing tiers and product quality levels for nobles, merchants, and commoners
Romans, who established the macellum system that separated luxury goods in the forum from common goods in peripheral markets
Egyptians, who organized their marketplaces into hierarchical zones based on the buyer's relationship to the pharaoh
Chinese (Han Dynasty), who implemented the 'five market system' dividing trade by product category rather than customer type