So I made a new nation in my mod and it wont show up. Any Solutions?

if you still have this problem, the here is my solution: in the edit country menu go to the map andclick on some of the states that are supposed to be this new country, then right after export the mod (it worked for me, I hope it will also work for you)

If that doesnt work, make sure u dont have any nations you made with the same tag