clearbeard
King
And if the jungle has any resource on it (bananas, citrus, etc.) you can't build a trading post on that tile. Plantation, road/railroad and fort are the only options.
Which is irritating. Usually I don't build banana plantations for just this reason. It's one thing I really miss from Civ 4: being able to choose what improvement fits best, regardless of what resources are there.
No, it reduces unhappiness only from non-occupied cities I.E. non-puppeted cities.
I do not believe this is true. Puppet cities are not occupied, only annexed cities without a courthouse (with the symbol) are occupied. I don't have a useful save handy to confirm this with the Forbidden Palace, I'll try and note it in my next game and report back, if no one else has confirmed by then.