Which American grocery chain pioneered the first true 'self-service' shopping model in 1916, revolutionizing retail by allowing customers to select their own products without clerk assistance?

The modern shopping experience we take for granted today - walking through aisles, selecting products ourselves, and checking out at the end - wasn't always the norm. Before the retail revolution of self-service stores, clerks would fetch all items for customers from behind counters. This poll tests your knowledge about a pivotal innovation that transformed retail forever and set the foundation for modern supermarkets and department stores.

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Piggly Wiggly
A&P (Great Atlantic & Pacific Tea Company)
Safeway
Kroger