Which retail pioneer is credited with inventing the first true self-service shopping model in 1916, fundamentally changing how customers interact with stores?

The retail landscape has been transformed by numerous innovations throughout history. One of the most significant developments changed how we interact with stores forever, eliminating the need to have clerks fetch products from behind counters. This revolutionary concept is now the standard shopping model worldwide, but when it first appeared, it was considered radical and potentially disastrous by many retail experts. Test your knowledge about this pivotal retail invention that forever changed consumer behavior and store operations.

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Clarence Saunders with Piggly Wiggly stores
Frank Woolworth with Woolworth's five-and-dime stores
Sebastian S. Kresge with the S.S. Kresge Company (later becoming Kmart)
Richard Warren Sears with Sears, Roebuck and Co.