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 dramatically from simple trade to complex shopping experiences. The 19th and 20th centuries saw revolutionary changes in how people shopped, with innovations that forever altered consumer culture. This poll tests your knowledge about a pivotal moment in retail history that shaped how we shop today. Do you know which pioneering concept fundamentally changed the retail landscape and created the foundation for modern shopping experiences?

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Piggly Wiggly's self-service grocery store model
Sears Roebuck's mail-order catalog system
Woolworth's fixed-price merchandise policy
Marshall Field's department store customer service approach