Which retail innovation, first introduced in 1916, revolutionized the customer journey by allowing shoppers to select their own merchandise without clerk assistance?

The retail landscape has evolved dramatically throughout history, transforming from clerk-assisted general stores to modern self-service experiences. One innovation fundamentally changed how consumers interact with products and revolutionized the retail customer journey. Test your knowledge of this pivotal moment in retail history that shaped modern shopping experiences worldwide.

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Piggly Wiggly's self-service grocery store model
Woolworth's five-and-dime store layout
Marshall Field's department store browsing concept
A&P's supermarket chain design