With three of the AIs under my thumb, I now had to address the remaining three. Darius was the most obvious target, being both the strongest and the closest. However, the lay of his land was somewhat troubling.
My game, thus far, had been built on lightning strikes to the heart of my victims' empires, smashing their capacity to fight back before they had any chance to build a proper army. The Persians however, had their best cities in the south, with a ring of crappier cities and a whole lot of hills and mountains in the way. I had no doubt I could beat him down, but I worried that it might turn into a bit of a slog, giving Shaka and MM time to tech up and prepare better defences.
So, I hit upon the idea of sending my troops through Darius' lands to reach Shaka, who would go down much easier. With the Zulu broken, my army could then turn back to strike at the Persian heartland. By then my power rating would also be much higher, making Darius easier to vassalise.
Anyway, while preparing for the invasion (and marching my armies almost the whole circumference of the planet to get there), I had taken advantage of my growing economy to snag the GM from Economics, before moving in on my Liberalism target:
This came as my troops neared Shaka's border, so the initial attack was made by the Trebs I'd been spamming. But, once the first Zulu city fell...
Shaka's defences crumbled in the face of my superior firepower, and soon I reached his capital:
He would've capitulated earlier, but I had a few turns to kill whilst waiting for some developments on the domestic front (see below). After Ulundi fell, I went back to the table:
While the war in the west was going on, I made some other notable moves:
Firstly, I used my huge power advantage to bully some cash out of Musa, netting 10 gold-per-turn. I love doing this kind of thing to far off civs - I mean, it's not like I could attack him at this stage (except with Caravels).
Secondly, I used a GE that popped in Machu Picchu to build the Ironworks in Babylon. Subsequently, I also built the Moai Statues for a few more hammers. You'll see the results of this later on.
Thirdly, and most importantly, I came up with a plan to take down Darius and MM in super-quick fashion. Like a pool player thinking several shots ahead, I was already looking past Shaka to the wars that would end the game.
My tech path after Liberalism went Printing Press (bulbed by a GS I had saved for the purpose) -> Replaceable Parts -> Rifling. At the same time, I had popped yet another GM, and run another trade mission (there'd be at least one more before the end of the game). That gave me enough cash to upgrade the Maces I had been building back home, but the ones still waging war in Zululand would cost a small fortune.
At the same time, however, I really wanted to have Astronomy before I attacked Darius. For one thing, this would keep the supply-lines open to the cities I had taken from Shaka. More importantly, though, it would let me have a navy ready to ship troops to Mali as soon as the dust started to settle in Persia. Indeed, I had already built Drydocks in many of my cities in anticipation of this phase.
My solution was the
Total Merchant/Representation SE Warmonger's Upgrade Economy From Hell - a trick I've used several times in the past. It's time consuming, since it involves a complete rejig of almost every city. But it allows the generation of large sums of cash without slowing your research too much. These screenies should explain what I mean: