Which retail innovation, first introduced by Clarence Saunders in 1916, revolutionized shopping by allowing customers to select their own merchandise rather than requesting items from clerks?

The history of retail is filled with innovations that transformed how we shop. One particular breakthrough in the early 20th century fundamentally changed the retail landscape and set the stage for modern shopping experiences. This innovation eliminated the need for clerks to fetch products from behind counters and empowered customers to select their own merchandise. Test your knowledge of this pivotal moment in retail history!

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Piggly Wiggly self-service grocery store
Woolworth's five-and-dime store model
Sears Roebuck mail-order catalog system
A&P economy grocery chain concept