Howling:Status of America in the far future (SPOILERS for "The Impossible Astronaut")

At the beginning of "The Impossible Astronaut", when River Song escapes from Stormcage, a prison guard remarks that she's heading for America, which he assumes to be a planet. This part of the episode has to take place sometime around the 51st/52nd century AD. It does seem a little odd that people would have so little knowledge of America, considering its major role in history. Furthermore, in the classic series story "Revelation of the Daleks" (which could've been set either before or after the time period of River's imprisonment), the DJ has heard of the United States of America. And in "The Talons of Weng-Chiang", it's shown how Iceland, Peking, and the Phillipines have survived up to the year 5000 - why not America? EJA 12:32, April 24, 2011 (UTC)