Fortunately, horses were close enough for the second city, which I think I just managed to beat Boudica to. HA rushed her extremely early, but not so early that she didn't get out a third city. Tech path was Mining -> AH -> BW, followed by a Maths beeline. Kept all of Boudica's cities, healed up, and immediately declared on Pericles--and, since Hannibal was already expanding well and could be counted on to take Pericles's old land if I left it open, I kept all five of his cities and wiped him out completely.
Changed name away from goldys_lackey at this point and declared my love for Mehmed in all things.
Healed up and immediately declared on Monty, but during the first war the economy crashed
hard. The solution to this problem was, of course, "build more workers." I was doing a CS beeline and had Currency pretty early, but that wasn't enough. Eventually got CS for Bureau, which helped, but I'd lost a ton of HAs to Monty and therefore called the war off for a breather. Declared again, took a couple more nice cities, and called the war off again--at which point he peacevassaled to Hannibal and got Longbows in trade.
Turtled up at that point and did some peaceful building (MoM, Sistine Chapel, and for some reason the Shwedagon Paya). Diplo was extremely touch-and-go. Shared religion wasn't helping with Hannibal, so I went FR... which didn't help much with Mao or Washington, either (George hated my guts because apparently Pericles and Monty were his bestest buds in the world!). Tech path was a straight Cuirassiers beeline.
Literally the same term I Lib'd MT, Monty relinquished the vassal status! So I whipped out the Taj, upgraded all of the old HA's, and declared that same turn, then used a GP to double the length of the Golden Age... then got another pair of GPs a few turns later (one from Economics) to add another 12 turns!
Monty peacevassaled to tech leader (behind me) Hannibal during the first turn of the war, but that was just fine because I was producing Cuirs like mad and nobody was fielding better than Longbows. Took most of the rest of Monty's cities (razed one), then rushed the Cuirs to the front just as Hannibal finished the AP. Which he had in the same city as the Statue of Zeus. Yeah, I took great pleasure in razing that one.
So of course Monty was wiped out and Hannibal capitulated when I took Carthage, and from there it was a simple matter of taking a few annoying cities Mao had placed in the middle of my Greek and Celtic holdings, then rolling over a couple of his major cities to get him to capitulate. Washington took much less--just taking Philly and DC was enough.
95 mounted units--close to the most I've ever built.