I don't even mean that Europeans travel more because they jump a few European borders. Most European people I know have taken a whole year out after university to travel the entire planet, trying to see and experience as much as possible, from far Africa, to Asia and even America. I travel a lot myself and whenever I cross continents I always tend to meet the same people: Europeans (English, Swedish, Germans, French, etc.) and Australians. I rarely meet an American. Mostly I came across Canadians in South and Central America, but that was it.