I have all strategic resources, I have over a dozen client states, some of which completely cut off from the rest of the world, are very friendly with me (+100 and more) and suddenly, around turn 180 they start breaking trade agreements with me. I was at 18 trade agreements and within 3 turns I got down to about 8. Nobody accepts a trade agreement even when payed, unless they're going bankrupt.
I edited the faction's prestige limits so I am NOT at supreme and even that didn't stop it.
Anyone can tell me why this is happening? Is it because I have too many vassals? Is it because although I changed the prestige limits, I still have about 100 prestige and the chance to break agreement goes not by status but by prestige value? I.e. if I have 100 prestige and I'm noteworthy the change to break the agreement is exactly the same as if I have 100 prestige and I'm supreme?
Anyone can offer any idea on what should I do, or should I get used to the idea that I will have no trade agreements within 2-3 more turns and I'll have to go for military victory?
Is trade victory even possible?
NOTE: I've the 2nd patch. I don't use beta patches.