I don't think units gain any experience as long as they have a pending promotion, so you'd basically be wasting experience.Is it better to hold over a promotion of a unit with full health until the unit gets damaged ?
The trader should be transported back to its city of origin if you are at war with the city state and the trade route becomes free again.What happens to trade route when city state is conquered / in war ?
After researching Natural History I get some Antiquity Site on plots much needed for mines or farms, is there a way to clear the plot so it can be worked?
Playing as Greece requires me to build a theater square only on heals which might not be available at that stage and even if I decide to build the Acropolis on top of a much needed mine I still have to wait for a very long time till an Archaeologist will be available on site.
If an AI has the Civilized Agenda (they hate barbarians), what exactly do they like? I noticed that Peter the Great, who has that agenda in my current game, dislikes me because I'm not fighting barbarians. The problem is that I've explored most of the map and several barbarian camps are on other continents. So do leaders with that agenda already hate you if you've discovered a single barbarian camp anywhere on the map and don't do anything about it? Or is there some max distance involved?