ydejin said:Plop down a thane/disciple/zealot and have them do their "Great Work", or try dumping in multiple ones if necessary. I was actually surpised to discover that not only does this expand your radius a bit, it also actually immediately stops any unrest -- not sure if that was the intended effect or not or just what the Civ4 engine does when culture is increased in a city, but it does work.
This is almost a critical part of conquest in FfH I think. It is a "great work" so the stopping of unrest is expected. The miniculture bombs are incredibly useful for ensuring you can hold a city after taking it. (+25% defense right off, and 2 tiles of cultural radius to slow them down... results may vary depending upon how long the area has been under enemy control)