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When did Frank Lloyd Wright build the Usonian House?
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The Usonian House was built in 1949. It was designed by Frank Lloyd Wright and was the first house to be built in the Usonian style. The Usonian style is a modernist style of architecture that was popular in the 1940s and 1950s. It is characterized by a simple, functional design, with a focus on the use of natural light and open spaces.