Which retail pioneer introduced the concept of self-service shopping in 1916, fundamentally changing how customers interacted with products?

The retail industry has transformed dramatically throughout history, with several innovations changing how we shop forever. One particular retail giant revolutionized the shopping experience in the early 20th century by introducing concepts we now take for granted. Test your knowledge of retail history and discover which visionary company pioneered practices that shaped modern commerce as we know it today.

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Piggly Wiggly (founded by Clarence Saunders)
Montgomery Ward (founded by Aaron Montgomery Ward)
F.W. Woolworth (founded by Frank Winfield Woolworth)
Marshall Field's (founded by Marshall Field)