Which 19th-century department store is credited with inventing the concept of 'departments' by organizing merchandise into specialized sections with dedicated staff?

Before the digital shopping era, department stores revolutionized retail history by creating unprecedented shopping experiences. These commercial palaces transformed how products were sold and displayed, pioneering many techniques we take for granted today. This trivia question explores the origins of an innovative merchandising strategy that changed retail forever and continues to influence store layouts and product presentation in our modern shopping environments.

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Bon Marché (Paris, 1852)
Macy's (New York, 1858)
Harrods (London, 1849)
Marshall Field's (Chicago, 1867)