Looks like a pretty poorly done book.
The greatest military leader of all time, Alexander the Macedonian, conquers all of the known world and creates the kingdoms of Syria Ptolemaic Egypt.
Not exactly what I would refer to as a stellar example of white supremacy.
What Alexander conquered was pretty much the Persian Empire, plus some tiny "pocket change" states here and there. He did so from what was one of the more technologically advanced and most organized cultures in the region (i.e., the Greeks). He did advance Greek geography, true.
The Persian Empire was ruled by Persians. Who, mind you, were (and largely still are) also white. If anything, Persians (in my experience) are more likely to be blond and blue-eyed than Greeks. When Alexander tried India... he failed. Miserably enough to be completely ignored by Indian history.
Compare this, if you will, to the career of Chinggis Khan, whose armies
never saw defeat in his lifetime, from Poland to Persia to China. He did this with one of the
least populated, most disorganized, economically underdeveloped, and resource-poor populations on the continent. It is said that the Mongols didn't even have their own blacksmiths, for the most part.
Alexander built on the very significant political and military advances of Phillip II, who built Macedon into a local military powerhouse; Chinggis started from scratch and wound up with an Empire that you could stick Alexander's into one corner of and rattle it around.
Alexander lost a whole campaign; Chinggis didn't lose a single battle - over a noticably longer career. Alexander's empire fell apart immediately upon his death; Chinggis's started to become less politically coherent only after the death of his son Ogedai (although it continued to expand), and its component parts - each larger than Alexander's Empires - were still ruled by the Khans for several generations more.
Shall I now conclude the Mongolian race was anointed to rule the Earth, and only a succession dispute allowed the lesser conquered races to hold back the Mongolians, who have since been oppressed by a vast Sino-Russo conspiracy backed by vast numbers?