In which decade did department stores first introduce large plate glass display windows, giving birth to the concept of 'window shopping' as a popular activity in major cities?

The retail landscape has evolved dramatically throughout history, with visual merchandising techniques transforming how stores attract customers. Before digital displays and interactive storefronts, retailers pioneered innovative ways to showcase products and entice potential buyers. This question explores a pivotal development in retail history that fundamentally changed shopping behavior and store design in major cities during the industrial revolution.

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1840s, coinciding with industrial glass manufacturing advancements
1790s, when the first European arcades were constructed
1880s, alongside the introduction of electric lighting in retail
1920s, during the post-WWI consumer boom