Describir: Geography in the twentieth century /

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