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

Before department stores and supermarkets dominated retail, shopping looked very different. The late 19th and early 20th centuries saw revolutionary changes in how stores were designed and operated. This poll tests your knowledge of a pivotal innovation in retail history that fundamentally changed how Americans shopped and influenced store layouts for generations to come.

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

Self-service grocery shopping (Piggly Wiggly stores)
Department store escalators (Macy's Herald Square)
Cash register checkout lines (Woolworth's)
Shopping carts (A&P grocery chain)