Which retail innovation, first introduced in Paris in 1852, revolutionized shopping by allowing customers to browse merchandise freely without being obligated to make a purchase?

Before department stores and shopping malls dominated retail, merchants had to innovate new ways to attract customers and display their wares. The history of retail is filled with fascinating innovations that transformed how people shop. This trivia question explores a pivotal moment in retail history that fundamentally changed the consumer experience. Test your knowledge of how our modern shopping habits evolved!

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The price tag (replacing individual haggling)
Le Bon Marché's 'goods on display' concept (the first modern department store)
The shopping catalog (allowing mail orders)
The glass storefront window (enabling window shopping)