I believe it was included to show the four the four kingdoms that Alexander's empire broke up into, to fulfill a prophecy in Daniel 8. Well, to make a long story short, I managed to track down the programmer responsible, and persuaded him to give me credit in the next edition of the work (I wasn't in it for the money, since we're both creationists).
Hey, royalties. ;') That one is a classic "imagine my surprise..."