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

Throughout history, retail strategies have evolved dramatically, transforming how we shop and consume. The 19th and early 20th centuries saw particularly revolutionary changes in retail that still influence today's shopping experience. Test your knowledge about one of the most significant innovations in retail history that fundamentally changed consumer behavior and established shopping patterns we still recognize today.

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Piggly Wiggly's self-service grocery store model
Marshall Field's department store browsing concept
Sears Roebuck's mail-order catalog system
F.W. Woolworth's fixed-price merchandise displays