The accident of the predominance of white men in modern times should not give us supercilious ideas about color or persuade us to listen to superficial theories about the innate superiority of the white-skinned man. Four thousand years ago, when civilization was already one or two thousand years old, white men were just a bunch of semi-savages on the outskirts of the civilized world. If there had been anthropologists in Crete, Egypt, and Babylonia, they would have pronounced the white race obviously inferior, and might have discoursed learnedly on the superior germ-plasm or glands of colored folk.
The man-made aspect of the rise of "white" people has a lot to do with the Moors, actually. This group of African, Arabs, and Arabized peoples brought science- ALL science- to west Asia ("Europe") including but not limited to geography, cartography, navigation, hydraulics, architecture, algebra, calculus, and philosophy. Jews, whom the Moors protected and tolerated, also contributed. The Islamic Moors and Jews had the effect of unifying an otherwise very divided Europe around a Christian identity and cause- i.e. the Crusades to colonize Palestine. Add that to the fact that west Asia had suffered numerous plagues (because of the fact that they were so backwards before the advent of the Moors) and you have a race of people who can carry terrible diseases they are immune to. Last but not least, they learned about gunpowder and guns from the Chinese and developed them.
After getting the upper hand over the Moors here's the scenario: A newly enlightened race of battle-hardy religious extremists get onto boats with maps of the world and experienced Moorish navigators. They carry with them plague germs and weapons. (It's no surprise that Spain and Portugal, who had the most Moors, were the first west Asians to go forth and conquer.)
At that point, it was their turn to take over the world.
They infected, they slaughtered, they traded, they divided and conquered, but the most important factor in all this is that as a "race" they stayed united. The west Asian powers fought, scrambled and raced, but it was gentlemen's competition- they were quick to make treaties and draw lines on maps that they largely respected. They didn't attack each other, but only each other's colonies and trade. They turned the inhumane savagery they once wreaked on each other in west Asia- fighting for kingdoms, colonizing, raping and enslaving- outwards. That factor supersedes all others- their unity as a race against peoples who largely didn't view themselves as a race.
European domination began by discovering gunpowders potential (from China BTW) and fighting their way through the world by force. Also the Western World invented the steam pump, and had WW1 and WW2 that just made the amount of inventions explode, so yes, the Western World might have invented ~90% of all in use today. But no, not everything, and certainly not whites. If not for others, we could never have reached the moon, we would have much more primitive surgery in hospitals, all in all, the world would not be the same without everyones help, no matter what skin colour.
And with heavy propaganda and religion/nationalism you'll never obtain a clear answer because of social stigmatization and blind following preventing people to go further and don't accept answers taken from granted. It is scary if anything, almost as if there is no truth because it was heavily hidden, and you'd have to accept that ugly statement as truth because you can't argue back.