Which pioneering loyalty program of the 1980s revolutionized the airline industry and became the model for modern point-based loyalty programs across retail sectors?

Customer loyalty programs have a fascinating history that reflects changing retail strategies and consumer behaviors throughout different eras. From simple trading stamps to sophisticated digital rewards, these programs have evolved dramatically. This trivia question explores a pivotal moment in loyalty program history that changed how retailers approached customer retention and how these programs became a mainstream business strategy.

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American Airlines' AAdvantage (1981)
S&H Green Stamps (1980s revival)
The Sears Card Club (1985)
Walmart's Customer Value Program (1983)