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A monarchs file is not necessary, what you need to do, if understand what you want to achieve, is to make new entries in three files: revolt.txt and countries.txt, both to be found in the DB folder, and one in countries.csv in the Localisation folder. You can look at the existing ones to see how to do it.
 
A monarchs file is not necessary, what you need to do, if understand what you want to achieve, is to make new entries in three files: revolt.txt and countries.txt, both to be found in the DB folder, and one in countries.csv in the Localisation folder. You can look at the existing ones to see how to do it.

Ok thanks for that.

Are there some kind of default monarch files for countries without them?
 
Ok thanks for that.

Are there some kind of default monarch files for countries without them?
Any country without a monarch file will have an eternal 6-6-6 monarch generated (using the leader language for the name, if I remember correctly).