Which retail innovation, introduced in 1916, first allowed customers to select their own merchandise without clerk assistance and is considered the precursor to modern supermarkets?

The retail industry has undergone numerous transformations throughout history. One of the most significant shifts in retail history was the invention of the self-service shopping model, which fundamentally changed how consumers interact with products. This innovation eliminated the need for clerk assistance for every purchase and revolutionized the shopping experience. Test your knowledge about this pivotal moment in retail history that set the foundation for modern shopping as we know it today.

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Piggly Wiggly's self-service store model
Sears Roebuck's mail-order catalog system
Woolworth's fixed-price merchandise approach
A&P's economy store format