Predator, diplo win in 900 AD.
The Middle Ages
I entered the MA in 1050 BC, gifted the Maya along with me to have someone research Feudalism and some more. Well, turns out there wouldn't be any more, and they only came up with Feudalism 2 turns before I would have needed to go for it myself. Worst monarch AI I've ever seen.
The Aztecs declared on me in 1200 BC, but I wasn't ready to take them on yet. And archer took care of the one warrior they sent my way. In 1025 BC an Aztec warrior attacked one of my Chasquis and lost, resulting in a GA for me. Nothing I had planned, but in hindsight it was the best possible moment. I
In 1000 BC France declared as well when I told their SoD consisting of 4 warriors to leave my lands. My swords lost 1 hp taking them out, and one became elite, and more WH for me. Thanks a lot Joan!
The swords continued on to raze Teotihuacan, Tlaxcala and Tlatelolco, and capture Tenochtitlan, all in all I lost 2 swords. Peace with Aztecs in 710 BC for their two remaining towns, leaving them as OCC in the desert well into my IA. I colonized the gems, but I hadn't counted on the barbies, so it wasn't until very late that I actually got them hooked up for real.
My 16 surviving swords kept marching south towards England and France. On the way they were harassed by pesky barbarian uprisings, and so were a bit delayed. In 570 BC I declared on England, razing her northern towns. London fell 450 BC, York in 370 BC and I got peace for two towns, leaving her with two, one tundra and one desert.
At that point I still had 12 swords alive in former England so pushing on towards France was easy. But I made a blunder there, a french spear managed to move past me (I saw it but payed no mind to it) all the way up into Aztecia and captured an undefended Juli. I took it back shortly after, but that effectively killed any WH I had. Paris fell in 190 BC, peace with France leaving them with 3 towns. Only 8 swords still alive in the south at this point, but Paris had SoZ

. Rushing a harbor in Rheims gave me dyes and ivory back home. Redeclared in 210 AD, took all their continental towns leaving them with two on the small island. The last one fell in 320 AD and France was the first to leave the game.
The Industrial Ages
One turns before France's demise, I entered the IA in 310 AD.
The IA were more or less only about continuously increasing my bpt maximum, to enable 4 turn research whenever possible. When I entered in 310 AD, my maximum was slightly below 500 bpt. When I entered the MT 590 years later that maximum had increased to well over 1300 bpt, more than I needed for 4 turns even on Atomic Theory. Building libs + unis + courts + wonders in productive or semi-productive towns, but most of all, ICS the former Aztec, French and English lands, irrigating and RRing to get 3+ scientists in each town. At the end I had more than 60 scientist farms, some (that had fresh water) running up to 7 scientist.
Some mop-up wars using cavs (I traded for MT from Spain) saw the Aztecs (650 AD) and England (750 AD) disappear. Maya and Spain were left to the end, declared on Spain on the last turn and an MA with Maya to ensure the vote went my way. Cuzco built ToE on the turn I researched Electronics, giving me Flight and Fission. Tiwanaku changed its palace prebuild to UN on the same IBT.
Diplomatic victory for Pachacuti of the Inca in 900 AD.
Comments:
Some sloppiness set me back a few turns from a perfect date. I didn't decide until pretty late that I was going for a tech win, though I always seem to play for a fast tech pace regardless. The GA couldn't have been better timed, except I should have gone for Literature much earlier and not during the GA. That likely cost me a turn or two getting through of the MA. Also I was way too late with some wonders. My top coastal researcher could have gotten the Colossus much earlier than 410 AD. That combined with a hesitancy to build the FP (I was hoping for a MGL for it), I finally build it in 370 AD, cost me one turn towards Steam Power. Still, for a fast and sloppy game (just over 20 hours total, I usually play much longer games) I'm quite pleased with it.