Which retail chain pioneered the first true 'self-service' grocery shopping model in 1916, allowing customers to select their own products rather than requesting items from clerks behind counters?

The way we shop today seems intuitive, but many retail practices we take for granted were once revolutionary innovations. One of the most transformative shifts in retail history changed how customers interacted with products and dramatically reduced operating costs for merchants. Test your knowledge of this pivotal moment in retail history that fundamentally changed the shopping experience worldwide.

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Piggly Wiggly
A&P (Great Atlantic & Pacific Tea Company)
Woolworth's
Safeway