Round 4: 65 BC to 640 AD (47 Turns)
Well, I considered your advice about researching Machinery next, but...
Yikes! 41 turns? I don't think so. Currency was half that. It also brought home that I still needed more infrastructure, whatever the threats to the nascent Spanish empire might be. So I crossed my fingers and hoped that my happy Jewish continent would remain that for just a little while longer. I built some Libraries and Monasteries instead of military units, at first. Then after Currency was done, I pursued Aesthetics and Literature. Yep, I had my eye on my favourite wonder, the Great Library.
Currency, of course, opened up the possibility of trading techs for gold, which would in turn fund deficit research of more techs. I had a bit of a tech lead on Augustus (though he still refused to cough up Calendar), and a substantial one on Joao. Even so, they managed to research a couple of typical AI techs on me. So I went to Joao, my more backwards and therefore less threatening neighbour, with a proposition:
I didn't really have the hammers to spare for an expensive wonder like the Apostolic Palace that can't be accelerated by any resources. But I thought, what if I outsource the building of the palace to Portugal? It should mean fewer units to face in the long run, too. Of course, it meant my future enemy would control the AP voting at first, but I figured that was nothing that a few Catapults and Swordsmen wouldn't be able to eventually fix.
Speaking of trading, it's amazing what the AI leaders will give up for a strategic tech:
This is starting to have the feel of a semi-exploit. I've noticed that the AI won't give you all its gold for a resource anymore, and that's a step in the right direction. But Blake and his compatriots need to do something about this.
Not that it's prevented me for taking advantage of it. Come on, I'm potentially facing a two-front war here.
I did take the time to build a wonder, but what with forges and copper, it came cheap:
And it was built in Seville to help secure its ownership of that corn tile, which Augustus is competing for. I'm planning on building the Moai Statues in Seville too. It will then get a commerce bonus on all those coastal water tiles (9 of them, in fact) until Astronomy, and a production bonus for the whole game. It's turning out to be a good production city--Heroic Epic, perhaps, since it'll be able to build ships too?
I wasn't done tech trading with Joao:
No, he wouldn't take Alphabet and Priesthood for it; he must have been researching Alphabet at the time. I switched into Hereditary Rule pretty much immediately.
I also built a few units, at least, and I took care of that northern barb city. I captured a Worker for my trouble, but the city I razed, since it wouldn't have claimed the stone tile for a very long time:
Meanwhile, I had spread Christianity to Madrid with the free Missionary and built a Christian temple there. This accelerated the arrival of my 2nd Great Prophet, whom I used for the Jewish shrine:
Meanwhile I settled the north.
I also founded Santiago just a little south of Toledo, on the coastal sugar tile near the horses.
I didn't found a resource-free city in the central jungle just yet; I figured that could wait. But with my borders encroaching on most of that territory, I figured it was safe to do this:
I opened borders with Augustus as well. It would help relations and the economy too. I'll keep an eye open for a Portugese or Roman Settler heading for the few free tiles in the middle of my territory, but I might leave them be. It would save me a Settler, after all.
You might have noticed that with Literature out of the way, I was researching another economic tech:
However, I haven't built any courthouses yet, and I may not have time to do so for awhile. I did, however, change civics to Caste System. Mainly I wanted to avoid the potential revolts in Madrid.
And Joao did, indeed, build the Apostolic Palace. Unfortunately, he's also running it:
I'll have to fix that before too long, though with all of us being Jewish I don't think he can cause too much trouble at first. However, I'll have to be prepared, if I go to war with either neighbour, to be voted into peace. Joao's possession of the palace, I think, argues in favour of him being my first target.
Fortunately, I had my own wonder to build:
It took 15 turns with Madrid's large population, good production tiles, and, of course, marble. I didn't even bother chopping a single forest for it. I figure I'll save them for chopping units.
And that is more or less where the round ended, with me researching Machinery, at long last, at the end of the round rather than at the beginning. Here's a look at the map:
And the tech board:
Augustus appears to have researched Metal Casting on his own. He did earn a Great Spy and I thought I saw something about another Golden Age for him, but I should go back through the game log to check. He'd have needed another GP of another type for that. Maybe he did use the GSpy for infiltration and stole MC from me? If so, he's not doing a very good job--I still have several techs on him.
And finally, the power graph:
I say it's time to finally do something about this, and Joao's ownership of the AP. I think the next round requires a build-up to war; several units should go into the build queues, followed by a switch to Theocracy and the production of several Level 3 units.
Should I research Civil Service after Machinery, or Engineering? The latter would, after all, enable Spain's UB, and just in time for what looks like a series of wars to unite the continent under Isabella's flag. It also enables some useful units. Trebs are, of course, very handy, and since Joao's only strategic resource is horses, Pikemen will be very useful indeed. I've built Walls in several cities already in anticipation of Castles. So I'm leaning towards Engineering to get the most out of the UB.