Thanks. Go in ...\empire total war\ETF\campaigns\1 and open scripting.lua with notepad. About at the end of the document you'll find the the local function OnWorldCreated() where you have to add a new line so it will be:
Code:
local function OnWorldCreated()
scripting.game_interface:technology_osmosis_for_playables_enable_culture("european")
scripting.game_interface:technology_osmosis_for_playables_enable_all()
scripting.game_interface:show_shroud(false)
end
Then copy your new scripting in all folders replacing the existing one.