History

Main article: History of Africa

Further information: History of North Africa, History of West Africa, History of Central Africa, History of East Africa, and History of Southern Africa

Prehistory

Main article: Recent African origin of modern humans

Lucy, an Australopithecus afarensis skeleton discovered 24 November 1974 in the Awash Valley of Ethiopia‘s Afar Depression

Africa is considered by most paleoanthropologists to be the oldest inhabited territory on Earth, with the human species originating from the continent.^[29][30] During the mid-20th century, anthropologists discovered many fossils and evidence of human occupation perhaps as early as 7 million years ago (BP=before present). Fossil remains of several species of early apelike humans thought to have evolved into modern man, such as Australopithecus afarensis (radiometrically dated to approximately 3.9–3.0 million years BP,^[31] Paranthropus boisei (c. 2.3–1.4 million years BP)^[32] and Homo ergaster (c. 1.9 million–600,000 years BP) have been discovered.

After the evolution of Homo sapiens approximately 350,000 to 260,000 years BP in Africa, the continent was mainly populated by groups of hunter-gatherers.  These first modern humans left Africa and populated the rest of the globe during the Out of Africa II migration dated to approximately 50,000 years BP, exiting the continent either across Bab-el-Mandeb over the Red Sea,^[36][37] the Strait of Gibraltar in Morocco,^[38][39] or the Isthmus of Suez in Egypt.^[40]

Other migrations of modern humans within the African continent have been dated to that time, with evidence of early human settlement found in Southern Africa, Southeast Africa, North Africa, and the Sahara.^[41]

The size of the Sahara has historically been extremely variable, with its area rapidly fluctuating and at times disappearing depending on global climatic conditions.^[42] At the end of the Ice ages, estimated to have been around 10,500 BC, the Sahara had again become a green fertile valley, and its African populations returned from the interior and coastal highlands in Sub-Saharan Africa, with rock art paintings depicting a fertile Sahara and large populations discovered in Tassili n’Ajjer dating back perhaps 10 millennia. However, the warming and drying climate meant that by 5000 BC, the Sahara region was becoming increasingly dry and hostile. Around 3500 BC, due to a tilt in the earth’s orbit, the Sahara experienced a period of rapid desertification.

The population trekked out of the Sahara region towards the Nile Valley below the Second Cataract where they made permanent or semi-permanent settlements. A major climatic recession occurred, lessening the heavy and persistent rains in Central and Eastern Africa. Since this time, dry conditions have prevailed in Eastern Africa and, increasingly during the last 200 years, in Ethiopia.

The domestication of cattle in Africa preceded agriculture and seems to have existed alongside hunter-gatherer cultures. It is speculated that by 6000 BC, cattle were domesticated in North Africa.^[45] In the Sahara-Nile complex, people domesticated many animals, including the donkey and a small screw-horned goat which was common from Algeria to Nubia.

Between the 10,000-9,000 BC, pottery was independently invented in the region of Mali in the savannah of West Africa.

In the steppes and savannahs of the Sahara and Sahel in Northern West Africa, the Nilo-Saharan speakers and Mandé peoples started to collect and domesticate wild millet, African rice and sorghum between 8,000 and 6,000 BC. Later, gourds, watermelons, castor beans, and cotton were also collected and domesticated.

They also started making pottery and built stone settlements (e.g., Tichitt, Oualata). Fishing, using bone-tipped harpoons, became a major activity in the numerous streams and lakes formed from the increased rains.^[49] Mande peoples have been credited with the independent development of agriculture by about 3,000–4,000 BC. In West Africa, the wet phase ushered in an expanding rainforest and wooded savanna from Senegal to Cameroon. Between 9,000 and 5,000 BC, Niger–Congo speakers domesticated the oil palm and raffia palm. Black-eyed peas and voandzeia (African groundnuts), were domesticated, followed by okra and kola nuts. Since most of the plants grew in the forest, the Niger–Congo speakers invented polished stone axes for clearing forest.^[51]

Around 4000 BC, the Saharan climate started to become drier at an exceedingly fast pace.^[52] This climate change caused lakes and rivers to shrink significantly and caused increasing desertification. This, in turn, decreased the amount of land conducive to settlements and helped to cause migrations of farming communities to the more tropical climate of West Africa.

By the first millennium BC, ironworking had been introduced in Northern Africa. Around that time it also became established in parts of sub-Saharan Africa, either through independent invention there or diffusion from the north^[53][54] and vanished under unknown circumstances around 500 AD, having lasted approximately 2,000 years.^[55] and by 500 BC, metalworking began to become commonplace in West Africa. Ironworking was fully established by roughly 500 BC in many areas of East and West Africa, although other regions didn’t begin ironworking until the early centuries AD. Copper objects from Egypt, North Africa, Nubia, and Ethiopia dating from around 500 BC have been excavated in West Africa, suggesting that Trans-Saharan trade networks had been established by this date.