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

Throughout history, retail has evolved dramatically, transforming from simple market stalls to complex consumer experiences. This trivia question explores a pivotal moment in retail history that fundamentally changed how consumers shop. Test your knowledge about an innovation that revolutionized the retail landscape and continues to influence shopping habits today.

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Piggly Wiggly self-service grocery store
Woolworth's five-and-dime store model
Marshall Field's department store layout
Montgomery Ward mail-order catalog system