Looking through the online manual, I can't seem to find any data on the actual effects of resources (ex. wine, timber, etc). These resources are listed with special slots on the trade details widget.
I imagine the effects might be similar to Civ 5's resources, but it's really unclear exactly what they do, and what the bonuses might be for having them imported.
In general I'm just wondering how the effects of resources work?
Are resources necessary for certain military, cultural, or trade buildings?
Do they give public order bonuses?