@1416-Squiggles, we're re-enacting the American war for independence here, and you aren't helping either side. ;)
@Xy
Don't be silly. Britain failed, and at the same time got caught up in wars with Holland, France, Spain, and Mysore.
Seriously, what are folk going on about here. In English, America can mean the country (United States of America) or the landweight (otherwise known as "the Americas").
Speaking as a Brit, you're pretty much right there. Although over here we like to joke that the 4th of July was the day that we decided we'd rather keep India. :D
Joking (and my previous post) aside, the majority of people the world over refer to the inhabitants of the United States as Americans. After all, Brits aren't known as the "United Kingdom of Great Britain and Northern Irelands". We're known as "Brits", or to the people who don't know the difference between the UK and England, they call us all English.
Back on topic...
I assume that the majority of people on the ladder leaderboards are Europeans because they have more free time, or are generally more interested in competing on the ladders.