Which 19th century retail innovation first allowed customers to browse merchandise freely without being required to make a purchase, revolutionizing shopping experiences?

Before department stores and online shopping, retail underwent a dramatic transformation in the 19th century that forever changed how people shopped. This trivia question explores a pivotal innovation in retail history that laid the foundation for modern shopping experiences and consumer culture. Test your knowledge about this revolutionary retail strategy that transformed products from hidden merchandise to visual temptations!

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The department store with 'open shelving' displays pioneered by Bon Marché in Paris
Mail-order catalogs introduced by Montgomery Ward in Chicago
Fixed pricing policies established by Macy's in New York
Self-service grocery shopping introduced by Piggly Wiggly