Not sure at what level AI will give Techs for peace. I got free Techs until the mid-Medievel level; I tried several times to get Chemistry, and never got it from Persia. Had to settle for Ergili, which WAS critical at that point!
akots: the AI definitely gave you a harder time with respect to ROP's! (It must have remembered you from GOTM36
) Part of the issue might be who was at war and at what time. India gave me a ROP while at war with France. France while at war with India and Persia. Persia while at war with France. Also, Rome was still in my game and had a Spearman right opposite me on the chokepoint so neither Persia nor Germany had a direct land path to attack me. And I went the opposite way around the continent, ending in France, so Persia had limited sea access to me as well; you captured France first and they seemed to want that Territory.
I saw Capitals defended by as much as 7 units or so; outlying cities no more than 2 or 3 usually. I tried to take advantage of AI wars - following in after they'd been at war for several turns.
Another oddity: several people have mentioned Settlers in boats which have prolonged the existence of some of the civs. That didn't happen to me, and I can't recall it ever happening! Could there be a setting somewhere that effects that, or is it a fairly rare occurance. I'm using PTW 1.27 as downloaded from the Conquests disk.
akots: the AI definitely gave you a harder time with respect to ROP's! (It must have remembered you from GOTM36

I saw Capitals defended by as much as 7 units or so; outlying cities no more than 2 or 3 usually. I tried to take advantage of AI wars - following in after they'd been at war for several turns.
Another oddity: several people have mentioned Settlers in boats which have prolonged the existence of some of the civs. That didn't happen to me, and I can't recall it ever happening! Could there be a setting somewhere that effects that, or is it a fairly rare occurance. I'm using PTW 1.27 as downloaded from the Conquests disk.