Which retail innovation, first introduced in 1916 by Clarence Saunders, revolutionized shopping by allowing customers to select their own merchandise without clerk assistance?

Test your knowledge about one of the most significant retail innovations that transformed how consumers shop. This development fundamentally changed shopping patterns, consumer behavior, and retail business models in the 20th century. Understanding this pivotal moment in retail history helps explain how modern consumer culture evolved and why certain retail brands succeeded while others failed.

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Self-service grocery store (Piggly Wiggly)
Department store with multiple product categories
Mail-order catalog with home delivery
Retail chain with standardized store layouts