Which retail innovation, first introduced in the 1890s, revolutionized customer loyalty by offering collectible items in exchange for continued patronage?

The evolution of retail has been shaped by technological innovations, changing consumer habits, and economic factors throughout history. This trivia question explores a significant turning point in retail history that transformed how businesses approached customer loyalty and marketing. Test your knowledge about this retail milestone that continues to influence modern shopping experiences and marketing strategies.

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Trading stamps (like S&H Green Stamps)
Loyalty punch cards
Store-specific credit accounts
Mail-in rebate programs