Which innovative market research technique did Phoenician merchants reportedly use to understand regional preferences when establishing new trading posts around the Mediterranean?

The Phoenicians were one of history's greatest trading civilizations, creating a vast commercial network across the Mediterranean from 1500-300 BCE. Their market segmentation strategies and brand management techniques were surprisingly sophisticated for the ancient world. This poll explores how these ancient merchants revolutionized trade through strategic product positioning and market research, establishing practices that would influence commerce for millennia to come.

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They sent disguised merchants to live among local populations for a year before establishing trade, learning preferences and creating tailored product offerings
They relied exclusively on royal decrees that mandated which products could be sold in each territory
They conducted divination rituals at each new market location to determine which goods would be most profitable
They traded only standardized goods across all regions, refusing to adapt their merchandise to local preferences