Which retail innovation, first introduced in 1916 by Clarence Saunders, revolutionized shopping by allowing customers to select their own merchandise and is considered the precursor to modern supermarkets?

Before modern supermarkets became the norm, grocery shopping was a completely different experience. Store clerks would retrieve items for customers from behind counters, a time-consuming process for both shoppers and staff. Then came a revolutionary concept that forever changed how we shop. Test your knowledge about this pivotal moment in retail history that transformed the consumer experience and set the foundation for modern shopping as we know it today.

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Piggly Wiggly self-service store model
Woolworth's department store layout
Sears catalog shopping system
A&P's chain store pricing model