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

The history of retail has been shaped by innovative store layouts and shopping experiences that transformed how consumers interact with products. From the earliest department stores to the shopping malls of the 20th century, retail spaces have evolved dramatically to influence purchasing behavior. This trivia question explores a pivotal moment in retail history that changed shopping forever. Test your knowledge of how store layouts revolutionized commerce!

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Piggly Wiggly's self-service grocery store model
Woolworth's counter service department store
Sears Roebuck's catalog showroom concept
Marshall Field's browsing-friendly display windows