I started the game thinking that I would race to Astronomy and dominate by settling the new world before anyone else got there. I was the first to Optics and fully scouted the New World and then life happened and I knew I wouldn't have enough time in real life to do that. So I decided a bit too late to go for a conquest victory... at least too late to be competitive. But I finished anyway with a late date.
I had three early wars with Darius, Lincoln, Ramesses and Hammy before I had decided to go for conquest. These were early wars to slow them down and to capture a few more cities to add to my collection. I could have capped them but didn't because I still had my sights on Domination. Once I shifted from Domination to Conquest, I went back and fully eliminated Darius (1220 AD) and capped Washington (1090 AD), Hammy (1505 AD) and Ramesses (1545 AD).
There was a war with Alex in the 1300s to slow him down because he was getting too big but he had been at war with Darius on and off since the BC era and he had a massive, highly-promoted army. I weakened him but decided to take a CF until I could build a bigger army, hopefully with a tech advantage.
I declared war on Ragnar in 1545 AD (the same turn I capped Ramesses) and had take all of his cities on the mainland (he had a few island cities north of his starting location) and a couple in the New World. At that point, he vassaled to Alex which meant that Alex a) DoW'd me and b) Ragnar wouldn't capitulate to me. So I sent my entire army to the east to take out Alex. I took all of his cities and "He was doing fine on his own" and wouldn't capitulate. I guess an AI can't capitulate if he has vassals himself??? So I sued for peace in 1645 AD and he gave me one of his two cities in the New World. At this point, I had to build a bunch of galleons to a) take out Rangar's island cities and b) take out Alex's city in the New World.
Ragnar broke away from Alex a few turns after our war ended so I would now be able to capitulate him separate from Alex. I built a bunch of galleons starting in 1645 AD and finally capitulated Ragnar (1705 AD) and took out Alex (17010 AD). I late date for sure. I'm sure that if I had focused on Conquest from the start, I could have done it several centuries sooner. All of my "fake" wars to grab a few extra cities could have ended in capitulation rather than a peace treaty and a tech or two. I'm pretty sure something in the 1000 AD range would be possible in the right hands (not mine, of course...

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