Which retail innovation, first implemented in 1916 by Clarence Saunders, fundamentally changed how customers interacted with products and is considered the precursor to modern supermarkets?

The history of retail is filled with revolutionary innovations that transformed how we shop. From ancient marketplaces to digital commerce, retail history showcases human ingenuity in creating better shopping experiences. This trivia question focuses on a pivotal moment in retail history that changed shopping forever. Test your knowledge about this famous retail innovation that revolutionized consumer behavior in the early 20th century!

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Piggly Wiggly's self-service shopping model
Woolworth's price tagging system
Sears Roebuck's mail-order catalog distribution centers
Marshall Field's department store window displays