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

Before the 1900s, retail stores operated very differently than they do today. Shopping was typically an assisted experience where clerks retrieved products from behind counters. The evolution of store layouts represents one of the most significant transformations in retail history, fundamentally changing how consumers interact with products and make purchasing decisions. This poll explores a pivotal innovation in retail store design that revolutionized the shopping experience and continues to influence modern retail environments.

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Self-service grocery store (Piggly Wiggly)
Department store floor plan (Marshall Field's)
Shopping cart introduction (Sylvan Goldman's folding cart)
Bargain basement concept (Filene's)