1290 AD - Built the Sistine Chapel. I'm sure there are a lot of people that never build this, but since it was still available I had decided to go for it. Personally I find it helpful to expand borders and make the initial capture of border cities easier if I'm at war and the value of denying it from the AI if they are going for a cultural victory is pretty high as well imo. Basically it bought me a lot of time if anyone was thinking about culture.
1565 AD - basically the 275 years in between Sistine and now was stabilizing the economy, building some wonders and deciding what to do with Mansa. I probably could have used the Praets and Trebs to take some of his cities, but instead I used him for quite a few tech trades...just basically kept an eye on what he was doing and went in a different direction. In 1565 AD I got rifling and started thinking about how to make him my slave reasonably quickly. I was starting to tech reasonably well at this point as well, and was about to pass Mansa by.
1620 AD - Corporations. I had been spamming all the different missionaries out of my triple holy city which by now had all 3 shrines, and as soon as I got Corps I was able to start building Wall Street. I also popped a GE somewhere around here and he was in position to found Mining Inc as soon as possible.
1650 AD - Railroad. Immediately founded Mining Inc and finished Wall Street. Started spamming Executives. In Free Market at this point and at 0% on the science slider most of the time.
1720 AD - Declared on Mansa. Had teched Assembly Line in between and promoted my CR3 Praets to CR3 Infantry. Berlin had been building Cavalry for a long time as well, so sent a small stack of Infantry up the coast and a very large stack of Cavalry up the middle towards Timbuktu. Took 2 border cities on the first turn of the war and while the power graph said Mansa might be able to hang, I could see what he had and it was simply a matter of time. Had a couple of cannons heading up the middle as well and was filling in with extra cannons along the coast out of Rome. The plan was to take Timbuktu and everything inbetween that and Rome, but I didn't want to completely cripple him before capitulation since he could be useful as a teching vassal.
1745 AD - Took Djenne. Almost to Timbuktu. Djenne was a very good city and came with a Levee already built, which was nice.
1790 AD - Kumbi Saleh was the next coastal city and I finally made my way up there on this turn. Was being careful not to lose units on the way up (had my medic over here).
1795 AD - Timbuktu is mine. He capitulates and I took optics, communism and Astro....yes, I had made it to almost 1800AD in a 2 continent game without even having optics, which I'm sure was a mistake but seemed to work out ok.
From there I focused on getting a Merchant...took a couple of tries, but in 1822 I was able to found Sid's Sushi in my Wall Street triple shrine, double corporation Tenochtitlan. Spammed Sushi after that. Had to switch to environmentalism for a bit so I could grow the cities while building enough health buildings to support the population growth, then switched back to free market while that was accomplished (built Cristo, so not a big deal...other than the maintenance costs).
By the end I had a massive army since I had been building Mech Infantry for a long time. Had just moved my Transports into position to load everyone on the boats to conquer the rest of the world (it was going to be a slaughter) but global warming hit near Timbuktu and a diplomatic victory opportunity presented itself so I decided just to end it.
Fun map and I'm sure it could be played many different ways. I just really hate micromanaging the city tiles in the early game to keep my economy afloat...once I got past that it was smooth sailing.
Built too many wonders, including the Space Elevator which I'm pretty sure I've never built before. Once I was in position to take out Mansa though it was pretty much over. The corporations are simply too powerful for the AI to overcome if you are in the lead at that point.
Some pics from various points:
Tenochtitlan when I captured it
Then when I founded Mining Inc:
And some of my better cities at the end of the game: