Which architectural firm first pioneered the aluminum-framed curtain wall system that became the standard for modern skyscrapers in the 1950s?

Modern architecture was transformed by innovative product design that changed how buildings interact with light and space. Curtain wall systems revolutionized commercial architecture, allowing for glass-dominated facades that were previously impossible. This poll tests your knowledge about this pivotal architectural product innovation that shaped our urban landscapes and continues to evolve with sustainability demands and technological advances.

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Skidmore, Owings & Merrill (SOM) with the Lever House design
Mies van der Rohe's firm with the Seagram Building
Frank Lloyd Wright Associates with the Johnson Wax Building
Eero Saarinen & Associates with the General Motors Technical Center