Nah, its not. As much as that is, if other races were kept down at the bottom, and itd be only white people, one slight environmental change and we'd face a mass extinction. From attached book "An extremely important aspect of evolution is heterogeneity. Humans are a very heterogeneous species, varying greatly in appearance, attitudes, and behaviours. This accounts to a great extent for our abundance and for our ability to fit to almost any ecological niche on earth. If we were all identical, then any single environmental challenge would wipe us all out. Our variability improves the chances that a segment of the population that is unique in some way, might survive when others wouldn't."
So aside from the skin melatonin levels, culturally... its just politics and industrialization. Whilst everyone else is busy fighting civil wars in and out, Europe included (what nation was so particularly obsessed about white supremacy? Yeah.), the British anglo saxons hid their intentions and offdumped their populations into other countries because those people were sick and tired of their own country, andor, they wanted to have settlements in other places. Australia, New Zealand, parts of Canada, certain parts of America. Now, as much as we'd complain about the Chinese, they're just doing the same. The world doesnt evolve around one particular group of species. If everyone were british, or chinese, or etc... well considering we come from various tribes, the labels don't matter really. But politically, it does. Unfortunately however, because cultural homogeneity matters into how one accepts the other, it sort of plays a role into how skin colour is affected. The Japanese for example, are facing a certain amount of time before their population is extinct due to the extreme notions of their attitudes towards homogeneity. Soon, likely everywhere, it'll be the same, except huge empires. Where others have to mingle with each other, they'll have to exclude race or skin colour.
