I dunno. Vermont doesn't have a coast line and would be too poor on its own to really last for 250 years, sandwiched between the US (which has claims on it) and Canada. It would be really cool to see an independent Republic of Vermont, though. An American version of the Netherlands?
Yeah, but that's still no real reason to refer to the area north of them as just "North America." Anglo-America might be a bit better (chosen vs Latin America) but still wouldn't be perfect, given Mexico and primarily Anglo Caribbean Islands. Not sure of any other possible names.
That wasn't what I meant to infer at all...what was meant was that Cen Am and the Caribbean were included as part of North America and there are more than just the 3 states.