Which retail innovation, first introduced in 1916 by Clarence Saunders, revolutionized shopping by allowing customers to select their own merchandise without clerk assistance?

Before modern supermarkets became the norm, grocery shopping was a completely different experience. Store clerks would retrieve items for customers from behind counters, and self-service was unheard of. This poll explores a pivotal innovation in retail history that fundamentally changed how we shop and set the foundation for the modern retail experience we know today.

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Piggly Wiggly stores (the first true self-service grocery stores)
A&P Economy Stores (the first discount grocery chain)
Woolworth's Five and Dime (the first fixed-price retailer)
Montgomery Ward catalog stores (the first retail chain with standardized merchandise)