Which retail innovation, introduced in 1916, fundamentally changed shopping by allowing customers to select their own merchandise rather than having clerks gather items for them?

The history of retail is filled with innovations that transformed how we shop. From the earliest marketplaces to today's digital commerce, certain breakthroughs stand out as truly revolutionary. This poll tests your knowledge about a pivotal moment in retail history that fundamentally changed the shopping experience for consumers worldwide and set the stage for the modern retail landscape we know today.

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