South America is one of the hotbeds of football, and in this series we explore the different nations of the continent. In each episode of The South America Files, we'll be looking at how the game has developed; the clubs, the players, the joys and despairs. Guided by our South American football expert Dr Pete Watson, in this episode we focus on Peru, whose international team has the coolest of shirts, but whose clubs have never triumphed in the Copa Libertadores.