Everyone was Asian. It's complicated.
In reality, humanity most likely came from a variety of interbreeding sources. New branches of the human family tree always being discovered. See denisovians, etc. There is even some thought that certain frenchmen have traces of neanderthal ancestry.
I find it fascinating, the way primitives are obsessed with the color of skin, even though it doesn't necessarily have anything to do with "race," another thing that seems to obsess them.
Such as when Lamond, the MrsCorpio primitive, gets all orgiastic over the black skin of the predecessor to the current president, as if that made him, well, "black" in the same sense that Lamond is.
Even though I'm pretty white, I have no doubt that my not-so-long ago ancestors on my mother's side were sort of tawny, with maybe a touch of purple, from the way my mother and one of my brothers was (not nearly as white as those in the rest of the family).
But it's nothing for me to waste a whole lot of time obsessing over.