Fossil record indicates humanity arose on the African Continent - in/around Gauteng. Yet the oldest civilizations on record are far afield - Ebla, Mesopotamia
What drives civilization? Why is the cradle of civilization not nearer the cradle of humanity?
In my opinion civilization is that state of intellect when beings of a community recognize that collaboration rather than competition for resources is feasible, and actively work in that direction (granted we humans still have competition at the level of village, town, company, & nation). Unlike other contemporary civilizations (ants and bees for instance) humans are not segregated into castes such as the warrior, worker - intellect drives human civilization.