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

Step back in time to explore a pivotal moment in retail history that transformed how we shop. The evolution of retail spaces reflects changing consumer behaviors, technological innovations, and cultural shifts throughout history. This question focuses on a revolutionary retail concept that fundamentally changed the shopping experience and set the foundation for modern retail as we know it today. Test your knowledge of retail history milestones that shaped consumer culture!

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Piggly Wiggly's self-service grocery store model
Macy's department store floor plan
Sears Roebuck mail-order catalog system
Woolworth's fixed-price merchandise concept