• We have updated our Community Code of Conduct. Please read through the new rules for the forum that are an integral part of Paradox Interactive’s User Agreement.
You can more or less follow the guide for EU3 here, the coding is pretty much the same as in EUR.

The easiest way is to basically copy and paste all of the files relating to an existing country and rename it.
 
I added goths to my game up in sweden and added like 3 other provs, kinda like a germania, I gotta redo it, cause I did it on a mod, and the mod slows game down much more than vanilla install, not my thing! Does everyone get stoppages about 3 years into play? I did the other night, (