Which retail innovation, first introduced in 1916 in Memphis, Tennessee, revolutionized shopping by allowing customers to select their own merchandise without clerk assistance?

Test your knowledge about one of the most significant innovations in retail history that forever changed how consumers shop. This revolutionary concept transformed neighborhoods, shopping habits, and even urban development throughout the 20th century. Beyond just a business innovation, it represented a cultural shift in consumer behavior and retail logistics that continues to influence today's shopping experiences.

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Self-service grocery store (Piggly Wiggly)
Department store with fixed pricing (Macy's)
Mail-order catalog shopping (Montgomery Ward)
Membership warehouse club (Price Club)