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

Throughout history, retail has evolved dramatically from simple market stalls to complex shopping experiences. The industrial revolution and subsequent technological advances transformed how people bought goods, creating retail giants that changed consumer culture forever. This trivia poll tests your knowledge about a pivotal moment in retail history that reshaped shopping habits worldwide.

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The shopping mall concept introduced by The Southdale Center
The self-service grocery store model pioneered by Piggly Wiggly
The department store format created by Marshall Field's
The catalog ordering system developed by Montgomery Ward