In 1916, which revolutionary retail concept was introduced by Clarence Saunders that fundamentally changed how customers shopped and influenced nearly all modern grocery stores?

Step back in time to the early days of retail innovation! The history of product marketing and retail experiences includes many groundbreaking developments that changed how we shop forever. This trivia question focuses on a pivotal moment in retail history that transformed the shopping experience and set the foundation for modern self-service stores. Test your knowledge of retail history and see if you can identify this game-changing innovation!

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Piggly Wiggly - the first true self-service grocery store where customers could select their own items
A&P Economy Stores - the first chain store to introduce price tags on all merchandise
King Kullen - the first to implement shopping carts and checkout lines
United Cigar Stores - pioneer of the customer loyalty card system with trading stamps