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

The history of retail has been shaped by groundbreaking innovations that transformed how consumers shop. From the earliest marketplaces to today's digital storefronts, retail evolution reflects changing societies and technologies. This poll tests your knowledge about a pivotal moment in retail history that fundamentally changed the consumer experience and set the foundation for modern shopping practices we take for granted today.

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Piggly Wiggly's self-service grocery store
Sears Roebuck's mail-order catalog
F.W. Woolworth's five-and-dime store
Marshall Field's department store bargain basement