Which pioneering retail chain is credited with introducing the first successful self-service shopping model in 1916, revolutionizing retail by allowing customers to select their own merchandise without clerk assistance?

The retail landscape we know today wasn't always filled with self-service stores where customers could browse and select products themselves. For centuries, retail meant counter service, with clerks retrieving items for customers from behind counters or shelves. This trivia question explores a pivotal retail innovation that fundamentally changed how we shop and helped create the modern supermarket and department store experience we take for granted today.

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Piggly Wiggly
A&P (Great Atlantic & Pacific Tea Company)
Woolworth's
Sears, Roebuck and Co.