The Ruined Kingdom
So, this is a simple issue. I decided to try to figure out the timeline for Runeterra and realized something. The Ruination had to be a relatively modern event, no more then two centuries max, though I suspect that it might be a little newer then even that. Considering this, the large realm of the Ruined King existed as a contemporary of Noxus and Demacia, and it always seemed to me that the land of the Ruined King was a fairly large and powerful realm, with a reknowned circle of knights, and the ability to amass a mighty navy. Now that considered, there isnt too much land available on the map. That large space between Noxus and Demacia is notably unnamed... perhaps the majority of that territory is the remnants of the Ruined Kings realm?