Hi, herewith some informations concerning the status change, coming directly from the GameRules DB:
LV1 20 Nation Age conversion factor (n years mean 1 nation age point increase)
LV2 4 Minimum amount of nation age points to make a status voluntary change
LV3 3 Minimum amount of nation age points to have a status mandatory change when the territory size limits have been reached
LV4 12 Max amount of age points a nation can cumulate
LV5 15 When a nation has reached the max amount of age points (see LV4), after n years she has to change status (Kingdom,Empire,Collapse!)
LV6 4 Minimum number of provinces a nation must control in order to perform a voluntary status change to Kingdom (see also LV2)
LV7 6 Minimum number of provinces a nation must control in order to have a mandatory status change to Kingdom (see also LV3)
LV8 10 Minimum number of provinces a nation must control in order to perform a voluntary status change to Empire (see also LV2)
LV9 15 Minimum number of provinces a nation must control in order to have a mandatory status change to Empire (see also LV3)
I hope this will be helpful.
