Actually, we are "that relevant." US is over 3/5 population of the North American continent as a whole, and is the second largest country, after Canada.
Meanwhile, most Canadians live with 100 miles of the border.
The Continent America has currently 911 Mil people. The USA has around 300 Mil. So 1/3 Not 3/5.
The reason why many canadians live near the border is, because of the cold clima in the north, not because you guys think you are awesome or something.
Edit:
^ Never ran into an American who thought the entire US made up our continent but I have met a Englishwomen who thought Britain was not an island XD
Well, apparently you think EXACTLY that when you use the term "America" to descibe just ONE country.
Edited 2/10/2016 21:59:07