A friend told me, Britain is the easiest faction because the British Isles are never invaded. You can leave them empty and nothing will happen. I said, "No way!" But then, come to think of it, I've never been invaded when playing as GB; they have landed in America but never in the Isles. Of course, I have defended them adequately, but that has never freed me from being invaded when I'm playing as France or Prussia. I've never seen the Isles invaded when GB is an AI faction either. Is there anything to this?