Which retail pioneer opened the first true self-service grocery store in 1916, fundamentally changing how consumers shop and establishing the model for modern supermarkets?

The evolution of retail has dramatically transformed how we shop. One of the most significant innovations in retail history was the introduction of self-service shopping, where customers could browse and select products themselves rather than requesting items from clerks behind counters. This revolutionary concept changed retail economics, store layouts, packaging design, and consumer behavior forever. Test your knowledge about this pivotal retail transformation!

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Clarence Saunders with Piggly Wiggly
John Hartford with A&P
Sebastian Kresge with Kmart
Frank Woolworth with Woolworth's