Well, if you like, you can trick Ubuntu to believe that there is a Belgium specific French translation by creating an empty directory:
sudo mkdir /usr/share/locale/fr_BE
That results in both "French (France)" and "French (Belgium)" appearing as language options. It does not make much sense of course, as long as only one French translation exists, but possibly you can be popular in some Belgium Ubuntu forum by passing on the tip. ;-)
Well, if you like, you can trick Ubuntu to believe that there is a Belgium specific French translation by creating an empty directory:
sudo mkdir /usr/share/ locale/ fr_BE
That results in both "French (France)" and "French (Belgium)" appearing as language options. It does not make much sense of course, as long as only one French translation exists, but possibly you can be popular in some Belgium Ubuntu forum by passing on the tip. ;-)