Change Investment Cost
Remove the Political Influence cost of provincial investments and city upgrades. New cost are:
All 4 provincial investment : 500 gold (base cost, may reduced by tech)
City upgrade : 500 gold and 1000 manpower
Metropolis upgrade : 5000 gold and 10000 manpower
Only changed the cost, other requirement and effects are unaffected (e.g. required 80 pop and provincial capital for metropolis so it friendly to other mods
Not Ironman friendly