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

Before modern shopping experiences became commonplace, retail underwent several revolutionary changes throughout history. One particular innovation transformed how consumers interacted with products and dramatically altered the retail landscape. Test your knowledge about a pivotal moment in retail history that changed shopping forever and influenced product development strategies that we still see today.

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The Piggly Wiggly self-service grocery store model
Macy's department store display windows
Sears Roebuck mail-order catalog system
F.W. Woolworth's five-and-dime pricing structure