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 obvious—walking freely through stores, selecting our own items, and bringing them to the checkout. But this wasn't always the case! For centuries, retail meant clerks fetching products for customers from behind counters. One revolutionary invention transformed shopping forever, creating the modern retail experience and fundamentally changing how brands connect with consumers. Test your knowledge about this pivotal moment in retail history that shaped our shopping habits and launched countless technologies we now take for granted.

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Piggly Wiggly's self-service grocery store concept
Marshall Field's 'browsable' department store layout
Woolworth's grab-and-go retail model
A&P's customer-selection shopping format