Which inventor is credited with creating the first self-service grocery store concept in 1916, revolutionizing retail by allowing customers to select their own merchandise?

Retail innovation has dramatically transformed how we shop over the past century. One of the most significant shifts was from clerk-assisted shopping to self-service models, where customers could browse and select products themselves. This revolutionary concept changed retail forever and gave birth to modern supermarkets and department stores. Test your knowledge about this pivotal moment in retail history!

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Clarence Saunders (Piggly Wiggly)
Frank Woolworth (Woolworth's)
Sebastian Kresge (Kmart)
James Cash Penney (JCPenney)