I would say it's due to their inherently savage and warlike nature. And no, I'm not kidding.
wow...where do I begin with a such an incxredibly stupid statement like this???....look at the history of the world, stupid......how many wars were perpetrated by whites in the British empire, Germany (caused both world wars), France, the Roman Empire, etc, etc..you have the nerve to talk about "savage and war-like culture"?
Taking over other people's lands, wiping out whole populations through genocide,slavery. the Holocaust, ethnic cleansing in Bosnia, the Soviet Union's Genocide of the Ukrainians by starving them to death resulting in millions of deaths, the British intentionally causing a potato famine which wiped out millions of Irishmen,
WOW..."savage and war-like culture"...hmmm..you must have been looking in the mirror when you said this