Which retail chain opened the first true self-service grocery store in 1916, pioneering the concept where customers could select their own merchandise without clerk assistance?

The way we shop has evolved dramatically over the centuries. Before the early 20th century, customers would give their shopping lists to clerks who would gather items from behind counters or from storerooms. This all changed with a revolutionary retail concept that forever transformed consumer behavior and store design. Test your knowledge about this pivotal moment in retail history that shaped modern shopping experiences worldwide.

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