I remember playing the Americans in Civ 3, all was going well, I was nice and peacful, but then got to the later stage and oil appeared. I had a fairly large em

I remember playing the Americans in Civ 3, all was going well, I was nice and peacful, but then got to the later stage and oil appeared. I had a fairly large empire, but no oil. Without oil a lot of the later units aren't available, so invasion it was. So realistic.