Which of these architectural product launches is credited with enabling the modern skyscraper era by solving a key vertical transportation challenge?

In the world of architecture, certain product innovations have fundamentally changed how buildings are designed, constructed, and experienced. This trivia question focuses on a groundbreaking architectural product launch that revolutionized the industry's approach to building design. Test your knowledge of architectural product history and how key innovations have shaped our built environment. Can you identify which of these architectural product launches truly transformed the industry?

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Elisha Otis's safety elevator demonstration at the 1854 New York World's Fair, which prevented elevators from falling if the cable broke
Louis Sullivan's terra cotta curtain wall system introduced in the 1890s for the Wainwright Building in St. Louis
Ludwig Mies van der Rohe's steel and glass curtain wall for the Seagram Building in 1958
Frank Gehry's CATIA software implementation for the Guggenheim Museum Bilbao in 1997