Normal players are not allowed to do it, you must ask an admin to change your country, but he can only put a fake one... because if it was possible to change into a real existing country that would create some problems probably
... Admins use real countries to mask themselves, so that the players can not know if there is an admin or not... well as you can see it doesn't work very well, but its still ok (not everyone visits the site and looks the map - take me as an example
) ...
P.S. By fake i mean countries like Marijuania, Federation of Planets, Blefuscu, and other similar stuff....
which were created when some player requested in the past (but not necessary)