Describir: Roots of contemporary american architecture :

  _____    __   __    ______    _____     _  _     ______    _____     _____   
 |__  //   \ \\/ //  /_   _//  |  ___||  | \| ||  /_   _//  / ____||  |  ___|| 
   / //     \ ` //     | ||    | ||__    |  ' ||   -| ||-  / //---`'  | ||__   
  / //__     | ||     _| ||    | ||__    | .  ||   _| ||_  \ \\___    | ||__   
 /_____||    |_||    /__//     |_____||  |_|\_||  /_____//  \_____||  |_____|| 
 `-----`     `-`'    `--`      `-----`   `-` -`   `-----`    `----`   `-----`