 Korotayev suggests that the hyperbolic trend observed for the world population growth after 10000 BCE does appear to be primarily a product of the growth of the World System.Articles from journals The presence of the hyperbolic trend itself indicates that the major part of the entity in question had some systemic unity, and Korotayev insists that the evidence for this unity is readily available.Indeed, he shows that we have evidence for the systematic spread of major innovations (domesticated cereals, cattle, sheep, goats, horses, plow, wheel, copper, bronze, and later iron technology, and so on) throughout the whole North African – Eurasian Oikumene for a few millennia BCE.As a result, the evolution of societies of this part of the world already at this time cannot be regarded as truly independent.