This is a quote from UniverseProject
" Naming territories will follow the same mechanics as naming a new invention. The player who creates an invention will be able to name it, but if the invention becomes widespread and people decide that the original name is inappropriate for whatever reason, the general public will have the option to rename it permanently. The same will go for territories (and planets, systems, stars..etc).
So if you invent something, make sure to give it a quality name!