Go to the folder where you have installed Victoria II. For me, that's C:\Program Files (x86)\Steam\SteamApps\common\Victoria 2\. There you will find a folder called decisions. Open it and create a new file there called PolishNation.txt or something. Inside it, you put this:
Code:
political_decisions = {
form_polish_nation = {
potential = {
#is_greater_power = yes
primary_culture = polish
NOT = {
exists = POL
exists = PLC
}
}
allow = {
war = no
POL = {
all_core = {
OR = {
owned_by = THIS
owner = {
in_sphere = THIS
}
}
}
}
}
effect = {
prestige = 10
change_tag = POL
}
ai_will_do = {
factor = 1
}
}
}
If you want the country forming Poland to have to be a GP, you can remove the # in front of that line (# is a comment mark. Everything after this on the same line is not read by the game).
If you want to, you can add localisation too. Go to the folder called localisation (inside the same folder as the decisions folder) and copy a vanilla file. Name the new file PolishNation or something. Open it with Notepad++ and delete all the contents (yes, all of it...). Put this in the file instead:
Code:
form_polish_nation_title;English;French;German;;Spanish;;;;;;;;;x;;;;
form_polish_nation_desc;English;French;German;;Spanish;;;;;;;;;x;;;;
Remember to keep an empty line at the bottom of the file to keep the game from going crazy with localisation.