Which retail pioneer opened the first true self-service grocery store in 1916, revolutionizing how customers interacted with products and fundamentally changing retail design?

The retail landscape we know today wasn't always so customer-centric! Before the 20th century, shoppers relied entirely on clerks who retrieved products from behind counters. The shift to self-service shopping fundamentally transformed retail psychology, store design, and consumer behavior. This innovation led to impulse buying, brand competition for shelf space, and completely redesigned packaging to attract customers. Test your knowledge about this pivotal retail transformation that changed shopping forever!

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Clarence Saunders with Piggly Wiggly
Frank Woolworth with Woolworth's Five and Dime
Sebastian Kresge with S.S. Kresge Company (later Kmart)
John Hartford with the A&P Economy Stores