Which pioneering retail innovation, first introduced in 1916, revolutionized shopping by allowing customers to select their own merchandise without clerk assistance?

Before the 1930s, shopping was a completely different experience. Store clerks would fetch items for customers from behind counters, and shoppers never directly handled products until after purchase. One innovation fundamentally transformed this model forever, creating the modern shopping experience we know today. Test your knowledge about this pivotal moment in retail history that changed consumer behavior and product marketing strategies worldwide.

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Piggly Wiggly's self-service grocery store model
Sears Roebuck's mail-order catalog system
Woolworth's five-and-dime pricing structure
A&P's supermarket chain concept