I'm not quite sure where to start..
Yes, I've heard that (some percentage of) Americans are ignorant of what goes on around them, true, nobody usually takes the time to care if other countries have similar traits. The size of the country should have little to do with it, or do you also not care what people are up to in Canada, or Mexico, or Cuba? The US is also surrounded by countries, even if they're not sizable ones.
I've also heard that a sizable number of US citizens speak (just) Spanish, wouldn't it be useful to be able to communicate with them? And in Canada, so I've heard, theres a lot of French speaking going on. I would think the biggest problem with Americans learning second languages would be that it's more difficult to take a school trip to somewhere that speaks it, and practice. Oh, and by the way, your average European (this is my guesswork here) probably knows a less than useful amount of a foreign language, if any at all.
Going back to size, maybe you don't realise, but size is relative. I was born and raised in the UK, which is tiny compared to even one US state, there a trip of 2 hours or so is something undertaken under duress, or for a weekend, it wouldnt be done just to visit a friend and return.. (Assuming one had friends so far away..) I'm now living in Germany (the past 10 years), which is somewhat larger, and defines a 3-4 hour journey as far.. 2 hours is nothing.. From what I've heard, some people in the US would drive 2 hours just to work or go shopping (I may be exagerating some) - My point is that even if a country is smaller, theres still no particular need to know the language of it's neighbours. Even in the US, where most speak english, some people have never been further than a few hours away from home.
I'll just ignore that bit about us being resentful.. Of what, why should we care? (Well personally I don't, maybe others do)
Personally I would hope I could vaguely find most countries on a map, not including ones that consist of an island or two, I'd have no idea who runs them though, but that also applies to most European countries.
Generally, people either care about such, or they don't. I'll agree with Dr. Guy, it's not a localised phenomenon at all. However, if the citizens of the "Worlds last superpower" want to be looked up to by the rest of us, they could put in some effort, as they're the only ones that will get noticed in such matters..
Jess