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

The way we shop today seems natural, but the self-service retail model we take for granted was once a revolutionary invention. Before this innovation, customers would hand their shopping lists to clerks who would fetch items from behind counters. This poll tests your knowledge about a pivotal invention that transformed retail operations, consumer psychology, and shopping behavior forever—setting the foundation for modern retail as we know it.

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Piggly Wiggly's self-service store model
Woolworth's price-marked merchandise system
Sears Roebuck's catalog ordering system
A&P's shopping basket introduction