Which retail innovation, first implemented in 1916 at the Piggly Wiggly store in Memphis, Tennessee, revolutionized shopping by allowing customers to select their own merchandise?

Test your knowledge about a pivotal innovation that revolutionized the retail customer experience and fundamentally changed how we shop. This development from the early 20th century created a new shopping paradigm that continues to influence retail strategy and store design today. Think you know your retail history? This question separates casual shoppers from retail aficionados!

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Self-checkout kiosks
Self-service shopping (allowing customers to browse and select items themselves rather than requesting them from clerks)
Shopping carts with wheels
Printed price tags on merchandise