Which ancient civilization invented the first known systematic retail inventory management system using clay tablets called 'bullae' that tracked goods with pictographic symbols?

Before modern shopping malls and e-commerce platforms, ancient civilizations developed sophisticated retail strategies that shaped commerce for millennia. From the bustling agoras of Greece to the complex trade networks of Mesopotamia, ancient merchants pioneered retail concepts we still use today. This poll explores how these early civilizations approached retail inventory management - a challenge they faced without modern technology yet solved with remarkable ingenuity.

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Mesopotamia (specifically Sumerians around 3500 BCE)
Ancient Egypt during the New Kingdom period
The Indus Valley Civilization at Mohenjo-daro
Han Dynasty China under Emperor Wu