Which retail innovation, first introduced in 1916 by Clarence Saunders, allowed customers to select their own merchandise without clerk assistance and is considered the precursor to modern supermarkets?

The retail landscape has transformed dramatically over centuries. One of the most significant innovations came in the early 20th century, fundamentally changing how consumers interacted with products and revolutionizing the shopping experience. This innovation slashed operating costs, increased product variety, and set the foundation for modern retail as we know it. Test your knowledge about this pivotal moment in retail history!

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Piggly Wiggly self-service store model
Marshall Field's department store browsing concept
Woolworth's five-and-dime merchandise displays
A&P's grocery chain distribution system