5 out of 18 are non-US, that's about 27%. Population distribution, South America has about 42% (380M), North has 58% (520M). Area distribution, South also has about 42% (6.9M sq miles) and North has 58% (9.3M sq miles). So maybe a couple more, but I still don't get why people get bent out of shape about these when you can expect an American site to have somewhat of an American-centric focus! I think QM does an admirable job of having a worldly variety of information here.
usually Guadeloupe)) and French Guiana (which is most often used as a point of argument).