I checked out the save... oh my god is this game so over. I will throw my voice into the small chorus saying you really need to move up a level ... or three. How is this game a challenge when you are so far ahead in the 1700s like this? I have never seen a game this dominating - you're pumping out great people faster than I know what to do with - Gandhi is dead meat, and your research and espionage rates are out of control. Frankly I'm not quite sure how you did it - I mean looking at your cities they are not really configured much differently than I would expect, but wow-- bravo.
By the way, have you checked the AP members screen lately? edit: sorry the first 2 screenshots go with the spoilers but the third is from your game in its current state.