The green lowlands on the southwest edge of Krosia have been off limits to the mortal people of Erathia for time immemorial. Before the Day of Dispelling, they were a mythical haze to the west of the Peninsula of Lozar.
When the magic that covered them was lifted the metallic dragons that lived there were revealed. They kindly, but firmly, enforce their borders. They don't have a formal "nation" of any sort, but they get along and have an organized society.
We are dragons, we do not require things like governments or laws. we have good manners.