Which innovative retail concept, first introduced in 1916, allowed customers to select their own merchandise without clerk assistance and revolutionized store layouts?

The history of retail is filled with game-changing innovations that transformed how we shop. One particular invention in the early 20th century revolutionized the entire shopping experience, giving consumers unprecedented freedom and access to products. This innovation quickly spread worldwide and fundamentally changed store layouts, customer behavior, and retail strategy. Test your knowledge of this pivotal moment in retail history!

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Self-checkout kiosks
Shopping carts
Self-service shopping (Piggly Wiggly stores)
Department store model