This would be good to know for sure, i've thought about using that flag with religious city improvements, allow each civ to choose one of different religious temples and as soon as enough temples of the same type are built, a world wonder becomes available giving further bonuses to that temple type. Its a way of making religions more interesting in civ3. But if every civ would just build the same temple, it would be worthless..
Right, but then if you change goverment, those temples stop working