Which ancient civilization used clay bullae (small clay envelopes with tokens inside) as the world's first inventory management system for tracking quantities of goods in trade?

Before modern retail technology, ancient civilizations had sophisticated systems for tracking goods and managing marketplaces. The Romans, Egyptians, Mesopotamians, and other advanced ancient societies developed methods to control inventory, prevent theft, and ensure proper taxation of merchants. This poll tests your knowledge of how these early civilizations handled what we now call 'retail inventory management' thousands of years ago.

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Ancient Mesopotamia (circa 8000 BCE)
Ancient Egypt (circa 3000 BCE)
Ancient China (circa 2000 BCE)
Ancient Greece (circa 800 BCE)