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

The retail landscape has evolved dramatically over centuries, transforming from simple market stalls to complex shopping experiences. This trivia question explores a pivotal innovation that fundamentally changed how consumers interacted with products and revolutionized the retail industry. Test your knowledge of retail history and the transformative moments that shaped modern commerce!

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Piggly Wiggly's self-service grocery store model
Sears Roebuck's mail-order catalog system
Marshall Field's department store price tags
F.W. Woolworth's five-and-dime store concept