Which retail innovation, first introduced in the 1840s, revolutionized shopping by allowing customers to see products through glass windows without entering the store?

Before department stores and shopping malls dominated retail, merchants had to innovate ways to attract customers. The history of retail is filled with fascinating strategies that transformed how people shopped and interacted with products. This trivia question focuses on a pivotal innovation in retail history that changed shopping forever and set the foundation for modern retail displays and customer experiences. Test your knowledge of retail history!

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Display windows (shop fronts)
Catalog shopping
Self-service stores
Price tags