Which retail chain is credited with pioneering the first true 'self-service' grocery shopping model in 1916, allowing customers to select their own products without clerk assistance?

The history of retail has been shaped by key innovations that transformed how we shop. Before the 20th century, shopping involved clerks fetching products from behind counters based on customer requests. A revolutionary concept emerged that would fundamentally change retail forever, putting product selection directly in consumers' hands. Test your knowledge about this pivotal moment in retail history that created the shopping experience we know today.

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