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

The retail landscape we know today has evolved dramatically over centuries. From small general stores to massive department stores to online shopping empires, retail history reveals fascinating innovations in how products reach consumers. This trivia question explores a pivotal moment in retail history that forever changed how people shop and interact with products. Test your knowledge about this retail transformation that shaped consumer culture!

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Piggly Wiggly self-service grocery store
Woolworth's five-and-dime store
Sears mail-order catalog shopping
Marshall Field's department store