[Endoperez]

There aren't different files for different nations. In most cases, you use a selection command (#selectnation, #selectitem), then adjust it some way (see command #era), then put an #end after you're done.

Either modding or mapmaking document has the list of nation numbers, which you'll need. You can't select nations by name, because there are duplicates (e.g. two Marignons).

You might have "mymod.dm" text file which has something like this:

#selectnation 111
#era 9
#end

#selectnation 222
#era 8
#end

I trust you can find the correct numbers for age and nation. Just see the descriptions of the commands in the modding manual.