Quote Originally Posted by Galain_Ironhide
Send some merchants up to the Russian lands (Smolensk, Kiev, sorry cant remember all of the province names). There are some quite profitable gold resources up there.
I believe you mean amber by gold resources?
Quote Originally Posted by Yoyoma1910
It also seems somewhat driven by what your faction has access to. For instance, I've noticed as Portugal that the iron resources in Spain are substantially more valuable than if I'm playing, say France.
That's a bit strange, since IIRC there's some iron resources in eastern France, too. Maybe it's just the capital... The French capital might be farther from the nearest iron resource than the Portuguese capital?