Which revolutionary retail concept, first implemented in 1916 by Clarence Saunders, allowed customers to select their own merchandise without clerk assistance and fundamentally transformed the shopping experience?

The retail customer journey has evolved dramatically over the last century. One pivotal moment transformed how consumers interact with products and revolutionized the shopping experience forever. This invention eliminated the need for clerk assistance and fundamentally changed store layouts, product packaging, and marketing strategies. Test your knowledge about this retail revolution that we now take for granted but was once considered a radical departure from traditional commerce.

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