Which retail innovation, first successfully implemented in 1916, fundamentally changed shopping by allowing customers to select their own merchandise without clerk assistance?

The history of retail has seen numerous innovations that transformed how people shop. From ancient marketplaces to modern e-commerce giants, retail strategies have evolved dramatically over centuries. This trivia question focuses on a pivotal moment in retail history that changed consumer shopping behaviors forever and set the foundation for modern retail experiences.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Piggly Wiggly's self-service grocery store model
Macy's department store window displays
Sears Roebuck's mail-order catalog system
F.W. Woolworth's five-and-dime pricing strategy