OK, I've played a bunch of Civ3, dabbled with Civ5 G&K, and am coming back to Civ4 BTS to flex some different muscles. I do a decent job of expanding, and have throttled my urge to expand to avoid crashing my economy. Overall, though, I keep stalling out in the late Renaissance (1400-1700 AD) where one or more AI have grown as large as I have. And they all seem to be pleased with one another, so they aren't starting any wars. WTH? Here's an example save from my current game as the Inca. I used the Quechas to grab a bunch of land, and have made nice with Gilgamesh to my west. In trying to take out China in the southeast, I wasn't paying close enough attention and he peace-vassaled to Gilgamesh. I've been trying to get Charlemagne to declare on me, since he doesn't follow the AP religion, and then bribe Sumeria to attack him. No joy. Even when I picked a fight with Netherlands (vassal of HRE), I couldn't get Sumeria to join the fight. Do I need to commit to a major war, and engage Willem & Charlie? Should I shift my forces to the northeast, since Lincoln just made a demand of gold from me? How do I pull out of the pack? I've got lots of religions to spread, so I could go for culture.