Which ancient mythological concept most directly inspired the 'tiered rewards' structure common in modern customer loyalty programs?

Throughout history, mythology and folklore have influenced how we think about customer loyalty and devotion. From ancient tales of gods rewarding faithful followers to folklore creatures who bestow gifts upon those who remember them, these stories have modern parallels in customer loyalty programs. This trivia question explores how an ancient loyalty concept relates to modern retail strategy. Test your knowledge of both mythology and contemporary customer loyalty approaches!

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The Norse Valhalla, where warriors earned different levels of honor based on their battlefield deeds
Greek Eleusinian Mysteries, where initiates progressed through levels of secret knowledge
Egyptian Afterlife, where souls were judged to determine their rewards in the Field of Reeds
Celtic Otherworld journeys, where heroes received increasingly valuable magical items