Which retail innovation, first introduced in 1916 by Clarence Saunders at his Piggly Wiggly store in Memphis, Tennessee, revolutionized shopping by allowing customers to select their own merchandise?

The way we shop has transformed dramatically throughout history, from ancient marketplaces to modern e-commerce. This trivia question focuses on a pivotal innovation that changed the retail landscape forever, shifting power from store clerks to customers and fundamentally altering shopping psychology. Test your knowledge of this revolutionary retail development that we now take for granted!

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Self-checkout kiosks
Shopping carts
Self-service shopping (allowing customers to browse and select items themselves)
Barcode scanning system