Which ancient civilization created the first documented customer loyalty program, where merchants gave clay tokens to customers that could be exchanged for goods at future purchases?

Before modern customer loyalty cards and digital reward systems, ancient civilizations had their own methods of encouraging repeat business and customer loyalty. These early 'loyalty programs' reflected the sophisticated understanding of consumer behavior that many ancient societies possessed. This poll tests your knowledge about one of history's earliest documented customer loyalty initiatives.

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Ancient Egyptians during the New Kingdom period (1550-1070 BCE)
Ancient Babylonians under King Nebuchadnezzar II (604-562 BCE)
Ancient Phoenician merchants in their Mediterranean trading networks (1500-300 BCE)
Ancient Chinese merchants during the early Han Dynasty (206 BCE-9 CE)