Who is the architect that did not work under Peter Behrens?

Frank Lloyd Wright is the correct answer because he is known for developing his own unique architectural style independently and did not work under Peter Behrens, who was influential in the early 20th century. Behrens was a key figure in promoting the new industrial architecture in Germany, and he mentored several notable architects; however, Wright's career trajectory was distinct and he emerged as an individualistic force in architecture without direct associations with Behrens’s practice.

In contrast, Le Corbusier, Ludwig Mies van der Rohe, and Walter Gropius all had formative experiences that involved working with or being influenced by Peter Behrens in his Berlin office. Their connections to Behrens helped shape their approaches to modern architecture, which featured principles of functionalism and minimalism, hallmarks of the Bauhaus movement and other modernist ideologies. Therefore, while the other architects had significant interactions with Behrens, Wright's path remained entirely his own.