Which innovative retail operation, first introduced in 1916, revolutionized shopping by allowing customers to select their own items rather than requesting them from clerks?

The retail landscape has transformed dramatically over the centuries. Before the convenience of online shopping or even department stores, retail operations looked vastly different. This trivia question explores a pivotal moment in retail history that forever changed how consumers interacted with products and established the foundation for modern shopping experiences. Test your knowledge of retail history!

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Piggly Wiggly self-service grocery store
Woolworth's five-and-dime store
Marshall Field's department store
A&P economy grocery store