Which famous retailer first introduced the revolutionary 'self-service' shopping concept in 1916, fundamentally changing how customers interacted with products and establishing the foundation for modern supermarkets?

The history of retail contains fascinating innovations and transformations that have shaped our modern shopping experience. From ancient marketplaces to digital storefronts, retail has evolved dramatically through the centuries. This trivia question focuses on a pivotal moment in retail history that forever changed how consumers shop. Test your knowledge of retail history and see if you can identify this game-changing innovation!

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Piggly Wiggly, founded by Clarence Saunders
A&P (Great Atlantic & Pacific Tea Company), founded by George Gilman
Woolworth's, founded by Frank Winfield Woolworth
Selfridges, founded by Harry Gordon Selfridge