Which retailer pioneered the modern self-service grocery store concept in 1916, revolutionizing how Americans shopped for food?

Before Amazon dominated online shopping and Walmart ruled big-box retail, different companies shaped how Americans shopped. The early-to-mid 20th century saw the rise of revolutionary retail concepts that forever changed commerce. This trivia question explores a pivotal moment in retail history that influenced shopping patterns for generations to come. Test your knowledge of retail history and the visionaries who built America's shopping landscape!

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Piggly Wiggly, founded by Clarence Saunders in Memphis, Tennessee
A&P (Great Atlantic & Pacific Tea Company), founded by George Gilman in New York
Kroger, founded by Bernard Kroger in Cincinnati, Ohio
Safeway, founded by Marion Barton Skaggs in American Falls, Idaho