Which retail innovation, first introduced in 1916, fundamentally changed shopping habits by allowing customers to select their own merchandise without clerk assistance?

The retail landscape has evolved dramatically throughout history, transforming from simple marketplaces to complex omnichannel experiences. This trivia question explores a pivotal moment in retail history that forever changed how consumers shop. Test your knowledge about a revolutionary retail innovation that shaped modern commerce and influenced shopping habits for generations to come.

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• Piggly Wiggly's self-service grocery store model
• Macy's department store credit card system
• Sears Roebuck's mail-order catalog distribution
• Marshall Field's money-back guarantee policy

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