Which ancient civilization used a complex system called 'quipu' - knotted strings of different colors and lengths - as a data recording tool for tracking marketplace inventory and sales?

Before modern retail analytics, ancient civilizations developed sophisticated methods to track trade, manage inventory, and understand consumer preferences. From Mesopotamian clay tablets recording grain transactions to Roman market inspectors collecting data on pricing and demand, these early systems laid the foundation for today's retail analytics. This poll tests your knowledge about how ancient societies gathered and used commercial data to optimize their marketplaces and trading networks.

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Inca Empire
Ancient Egypt
Mesopotamia
Ancient Greece