Province history is located in the /history/provinces/ folder.
The files need to be named <ProvinceId> - <ProvinceName>.txt, where province name must be spelled identically to the name in definition.csv.
Note that effect = {} history command does not exist for provinces. Workaround is to use it in title history of the county, and scope to its location.
Example
Province modding simply state the holdings, religion and culture of a county. Here's an example:
# 1 - Vestisland
# County Title
title = c_vestisland
# Settlements
max_settlements = 2
b_reykjavik = tribal
#b_alftanes = city
#b_skalholt = temple
#b_pingvellir = castle
#b_kjalarnes = castle
#b_hvamm = castle
#b_hlidarendi = castle
#b_borg = castle
# Misc
culture = norse
religion = norse_pagan
terrain = arctic
# History
867.1.1 = {
b_reykjavik = tb_shipyard_1
}
900.1.1 = {
b_reykjavik = castle
b_reykjavik = ca_shipyard_1
b_alftanes = city
}
1000.1.1 = {
culture = norwegian
religion = catholic
}
