Which retail innovation, first implemented in 1916 by Clarence Saunders, fundamentally changed store operations by allowing customers to select their own merchandise without clerk assistance?

The history of retail is filled with groundbreaking innovations that transformed how people shop. From ancient marketplaces to digital commerce, retail evolution reflects changing societies, technologies, and consumer behaviors. This trivia tests your knowledge of a pivotal retail innovation that revolutionized the shopping experience in the early 20th century and set the foundation for modern retail operations.

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Piggly Wiggly self-service grocery store
Woolworth's department store model
A&P's supermarket chain concept
Montgomery Ward's mail-order catalog system