.com might be managed in America, but it’s not America’s – i.e. it’s for commercial organisations across the world to claim one.
When I want to use Google to find Dutch pages, I visit Google.nl, when I want to visit it internationally (which I do most of the time), I visit Google.com. If I wanted to find pages from the US, I’d visit Google.us, I guess, though I don’t think Google’d be good at that because US websites don’t usually use .us but just go for .com.
Anyway, when I registered my personal domain I explicitly chose .nl because I wanted to emphasize that that website is created from a Dutch point of view. However, the website for an open source project of mine is a .org because, well, it’s a non-profit organisation, sort of.
@wilhel1812 – so there are .us domains :)
(.gov is an odd case though, where the US claimed their own TLD. Though I guess if the ICANN ever decides to allow most any TLD, that won’t really be a problem anymore.)