Which ancient civilization invented the first known systematic retail inventory management system using clay tablets called 'bullae' that contained tokens representing specific goods?

Before modern shopping malls and e-commerce, ancient civilizations created sophisticated marketplaces and trading networks. The management of products, inventory, and commerce in these early societies laid the groundwork for retail practices we still use today. Test your knowledge about the world's earliest 'retail technologies' and inventory management systems that helped build empires through commerce and trade.

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Mesopotamia (Ancient Sumer)
Ancient Egypt
Indus Valley Civilization
Ancient China