Stone Age
1- The Early Stone Age in Africa began about 2.6 million years ago, when the ancestors of humans shaped the first large, handheld cutting tools of stone to carve the carcasses of animals.
2- During the Middle Stone Age, from about 200,000 to 45,000 years ago, most of what is now the Sahara Desert was savanna; mountains held trees and grass, broad rivers , fish and herds of cattle were to be found everywhere .
3- However, between 6500 and 4000 B.C., the climate changed ; Sahara began to dry up.
4- The rivers got smaller and disappeared; sand replaced grass; the forests perished causing cattle-herding societies to move southward, introducing domestic animals into sub-Saharan Africa.
5- The development of economies based on livestock herding and farming marked the end of the Late Stone Age.
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