I can't find any of the Rome stuff, are you sure it's the correct link?
Oh, ok. From this one bit on Rome, I agree with Primus Pilus. In fact I'd go further, and say it's blatantly false.
Rome would continue to grow, and in time it would come to absorb the classical Greek civilization as well. Rome too, would establish a great civilization with many great kings. One king of particular note is Constantine (271-337 A.D.), though not the greatest of the Roman kings, Constantine would have to be considered the most influential - His conversion to Christianity, facilitated the creation of the largest religious institution the world has ever known - the Holy Roman Catholic Church.
The people of the Eurasian plains would not stop here, they continued their outward migration until they had populated all of Europe, the middle-east, India, and the Americas. Over time, great civilizations would spring-up in each place that they settled. In Europe it is assumed that they cross-bred with, and absorbed, the Cro-Magnon Humanoids who still existed there.
One great mystery of Europe is Stone Henge in Britain. Did the European Cro-Magnon evolve to the point where he could build monumental structures - that seems unlikely. Or did people from one of the original Mediterranean countries, or even Egypt build it?