Who is the architect associated with the National Congress in Brazil?

The architect associated with the National Congress in Brazil is Oscar Niemeyer. He is renowned for his innovative and modernist approach to architecture, particularly in the design of civic and cultural buildings. The National Congress, located in Brasília, showcases Niemeyer’s signature style, featuring bold curves, sweeping forms, and a pioneering use of concrete.

Niemeyer was a key figure in the development of Brasília, the planned city that became Brazil's capital in 1960. His work on the National Congress exemplifies his ability to blend artistic expression with functionality, contributing significantly to the city’s architectural identity. The building consists of two towers, symbolizing the upper and lower houses of the Brazilian legislature, and features distinctive bowl-shaped structures that enhance its iconic silhouette.

Other architects listed may have made substantial contributions to the field of architecture but are not associated with the National Congress in Brazil. Le Corbusier, for instance, is known for his urban planning and modernist architecture, Frank Lloyd Wright for his organic architecture, and Ludwig Mies van der Rohe for his minimalist design, none of which relate specifically to the structure in question. Thus, Oscar Niemeyer's connection to the National Congress is what makes him the correct answer.