If I capture the last city of a Civ, then from what I understand, I will receive an EXTREME warmongering penalty among ALL Civs. So it's often recommended to just leave the Civ with one city, preferably a bad one, such as one located in tundra. However, sometimes it seems preferable to take the last city. For instance, sometimes the last city happens to be the capital, and so it is usually their best city. The last city would end up being the capital if it is located at the back of the Civ's lands, for instance. Also, if I leave a Civ alive rather than eliminating them completely, then they usually Denounce me, and sometimes other Civs will follow suit, perhaps ruining some of my Friendships. So, is it usually best to leave the Civ with one city? In what cases would you still eliminate a Civ?