Which retail innovation, introduced in 1916, fundamentally changed shopping by allowing customers to select their own merchandise without clerk assistance for the first time?

The history of retail has seen remarkable innovations that transformed how people shop. From ancient marketplaces to modern digital platforms, retail evolution reflects broader economic and technological changes throughout human history. This poll tests your knowledge about a pivotal moment in retail history that forever changed shopping habits and created new consumer expectations. Do you know how today's retail landscape was shaped by historical innovations?

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Piggly Wiggly's self-service grocery store model
Woolworth's fixed-price merchandise system
Sears Roebuck's mail-order catalog
A&P's grocery chain standardization