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

The history of retail has transformed dramatically over centuries, from ancient marketplaces to modern shopping experiences. This poll explores a pivotal development in retail history that forever changed how consumers interact with products and brands. Test your knowledge about a revolutionary retail concept that shaped consumer culture as we know it today.

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The department store (as pioneered by Bon Marché in Paris)
The self-service grocery store (Piggly Wiggly's innovation)
Mail-order catalogs (Montgomery Ward's business model)
The shopping arcade (like London's Burlington Arcade)