Describir: Roots of contemporary american architecture :

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