As a kid, me and my friends played Dragon raiders. To add to the story we had, I created a map of all the kingdoms. I was like 12 years old, so that's why the map looks so simple (especially the coastlines).. So when I discovered Warzone years later, I remembered I had this map lying in my files and tadaaa. It's here.
TLDR: I was a kid. The map is simple. I remembered the map and made a warzone map out of it.