Which ancient civilization invented the first known retail receipt system using clay tablets to record purchases and payments?

Before shopping malls and online stores, ancient civilizations developed sophisticated trading systems and retail innovations that laid the groundwork for modern commerce. Some of these ancient retail techniques were so effective that variations continue to exist today. Test your knowledge about the fascinating world of ancient retail practices and see if you can identify which civilization pioneered certain commercial innovations.

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Ancient Egypt
Mesopotamia (Sumerians)
Indus Valley Civilization
Ancient China (Shang Dynasty)