I had entered the IA in 420 AD, beeing at war with Egypt.
460 AD: Egypt is destroyed. Now I also want the Cartaginian land - to ICS them and to avoid having a streched front. If this is to be done, it must occur before rifles enter the scene. It is bad enough that they are fielding muskets as well as cavalry. So,
500 AD: Declare war on Carthage. I don´t have the forces to steamroll them, but I do make fair progress. I make my neighbors join me to minimize the risk of nasty surprises.
530 AD: My 3rd MGL forms a 3rd army.
600 AD: Carthage is annexed.

Also, Medicine could be acquired from the AI, so I´ve researched Electricity. I tried to trade it around early, hoping the AI would research Replaceable Parts for me. Sadly, they let me down on this one and showed more interest in Nationalism and its follow-ups.
By now, everyone loathes me, so I decide to go for the SS instead of the UN.
720 AD: Steel discovered. The ToE is used for AT and Electronics. From now on I´m on 4-turn research. But I doubt my current capacity will be enough to maintain that until Robotics.
760 AD: Replaceable Parts discovered. Useless AI
900 AD: Hoover Dam constructed.
960 AD: The discovery of Flight brings me into the Modern Times:
I gift the SCI-civs: Germany learns Fission and Greece gets Ecology!
Being in control of 44% of the land and 67% of the pop is not satisfying. Maybe I should take over Germany as well?
1000 AD: Computers learned, Fission and Ecology can now easily be traded for, as both have lost their monopoly-status. I´m close to dropping my science speed now.
1040 AD: Rocketry discovered. The Vikings dow! Great, now I have to juggle with my Infantry to avoid the taking of a coastal town by a berserk.

And damn, those Viking ships are fast.
1060 AD: UN constructed. I´ll never hold votes of course.
1090 AD: Space Flight discovered. Yes, this one took 5 turns. I had greedily fine-tuned my specialists to max money while finishing the tech after 4 turns, but a stupid Viking boat cruised on a fish that was beeing worked and forced one science farm of mine out of sync, costing me a whole turn!

1130 AD: Synthetic Fibers researched. The international diplomacy is starting to boil, so I sign a MPP with Greece. This ends in a world war of course.
1210 AD: I dow on Germany because of the MPP. This time I have some Modern Armours, so it takes only 3 turns to annihilate them. That done, the world slowly comes back to peace.
1310 AD: Robotics is discovered and the SS launched. I now posses 54% of the land, so there sure was some room to improve.