Ah!!!, i just love it when they convert... although the positions aren't very good, since they are so close to you that they share resource squares with other cities. Well, in my first game, only 6 or five cities I've built.... so the Americans, and aztecs come over and build right on the border and push mine back... I laugh at that!! Later, their cities are overthrowing their own government and i gladly take them in. I have about 10 cities now.