Which retail innovation was first introduced by Marshall Field's department store in Chicago during the 1870s, revolutionizing customer service and retail layout design?

In the 19th and early 20th centuries, department stores revolutionized retail with groundbreaking innovations in store layouts and customer experience that we now take for granted. These retail pioneers transformed shopping from a simple transaction into a social experience and set standards that modern retailers still follow. Test your knowledge about these historic retail innovations that shaped modern shopping experiences!

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The bargain basement concept for discount merchandise
The unconditional merchandise return policy ('The customer is always right')
The first escalator in a retail establishment
Window displays with electric lighting