Which retail innovation, first introduced in 1916, fundamentally changed store layouts by allowing customers to select their own products without clerk assistance?

Throughout history, retail environments have evolved dramatically from simple market stalls to sophisticated shopping experiences. This poll tests your knowledge about a pivotal moment in retail history that forever changed how consumers interact with products. Understanding these historical innovations helps product managers appreciate how store layouts and merchandising techniques developed into what we know today.

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Piggly Wiggly's self-service grocery model
Macy's department store display windows
Sears Roebuck's mail-order catalog system
Marshall Field's escalator shopping experience