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

Test your knowledge of historical retail innovations! The way we shop has evolved dramatically over centuries, with certain breakthroughs completely transforming the consumer experience. From ancient marketplaces to modern shopping methods, retail innovation has both reflected and shaped society. This question focuses on a pivotal moment in retail history that changed how stores operated and consumers shopped.

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Piggly Wiggly self-service grocery store
Macy's department store layout
Sears mail-order catalog system
A&P economy store model