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

Throughout history, retail has evolved from simple market stalls to complex shopping experiences. The 19th and 20th centuries saw revolutionary changes in how products were sold to consumers, with innovations that continue to influence shopping today. Test your knowledge about a pivotal moment in retail history that forever changed the consumer experience!

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Piggly Wiggly's self-service grocery store model
Woolworth's five-and-dime store concept
Sears Roebuck's mail-order catalog system
Marshall Field's department store layout