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

The history of retail is filled with transformative innovations that fundamentally changed how consumers shop. From ancient marketplaces to modern digital platforms, retail evolution offers fascinating insights into economic development, consumer behavior, and technological adoption. This trivia challenges you to identify a revolutionary retail innovation from the early 20th century that set the foundation for modern shopping experiences and forever altered consumer expectations.

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Piggly Wiggly's self-service grocery store format
Sears Roebuck's mail-order catalog distribution centers
F.W. Woolworth's five-and-dime pricing strategy
Marshall Field's department store customer service policies