Describir: Roots of contemporary american architecture :

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