I search up empire

[Constantinopple]

And it says it reserved because of a site supporter. Who was empire?

[Dungeon]

"Site Supporter" merely means you make a small donation to the site:

https://www.nationstates.net/page=store

Otherwise, probably not much known about them. Here's some meager info from the Texas tools:

http://nsdossier.texasregion.net//histo ... tart=&end=