Sub-Saharan Africa

Simplified climatic map of Africa: Sub-Saharan Africa consists of the arid Sahel and the Horn of Africa in the north (yellow), the tropical savannas (light green) and the tropical rainforests (dark green) of Equatorial Africa, and the arid Kalahari Basin (yellow) and the "Mediterranean" south coast (olive) of Southern Africa. The numbers shown correspond to the dates of iron artifacts associated with the Bantu expansion.

Sub-Saharan Africa is a geographical term used to describe the area of the African continent which lies south of the Sahara, or those African countries which are fully or partially located south of the Sahara. It contrasts with North Africa, which is part of the Arab World

The Sahel is the transitional zone between the Sahara and the tropical savanna (the Sudan region) and forest-savanna mosaic to the south. The Horn of Africa and large parts of Sudan are geographically part of sub-Saharan Africa, but nevertheless show strong Middle Eastern influence and are also part of the Arab world.

The Sub-Saharan region is also known as Black Africa, in reference to its "black" populations. Notably commentators in Arabic in the medieval period used a similar term, bilâd as-sûdân which literally translates to "land of the blacks" in contrast with populations of the classic Islamic world.

Geography

Sub-Saharan Africa covers an area of 24.3 million square kilometers.

Since around 5,400 years ago , the Saharan and sub-Saharan regions of Africa have been separated by the extremely harsh climate of the sparsely populated Sahara, forming an effective barrier interrupted by only the Nile River in Sudan, though the Nile was blocked by the river's cataracts. The Sahara Pump Theory explains how flora and fauna (including Homo sapiens) left Africa to penetrate the Middle East and beyond to Europe and Asia. African pluvial periods are associated with a "wet Sahara" phase during which larger lakes and more rivers exist.

Climate zones and ecoregions

Climate zones of Africa, showing the ecological break between the desert climate of the Sahara and the Horn of Africa (red), the semi-arid Sahel (orange) and the tropical climate of Central and Western Africa (blue). Southern Africa has a transition to semi-tropical or temperate climates (green), and more desert or semi-arid regions, centered on Namibia and Botswana.

Sub-Saharan Africa has a wide variety of climate zones or biomes. South Africa and the Democratic Republic of the Congo in particular are considered Megadiverse countries.

• The Sahel cuts across all of Africa at a latitude of about 10° to 15° N. Countries that include parts of the Sahara proper in their northern territories and parts of the Sahel in their southern region include Mali, Niger, Chad and Sudan.
• South of the Sahel, there is a belt of savanna, (Guinean forest-savanna mosaic, Northern Congolian forest-savanna mosaic) widening to include most of Southern Sudan and Ethiopia in the east (East Sudanian savanna).
• The Horn of Africa includes arid semi-desert along its coast, contrasting with savanna and moist broadleaf forests in the interior of Ethiopia.
• Africa's tropical rainforest stretches along the southern coast of West Africa and dominates Central Africa (the Congo) west of the African Great Lakes
• The Eastern Miombo woodlands are an ecoregion of Tanzania, Malawi, and Mozambique.
• The Serengeti ecosystem is located in north-western Tanzania and extends to south-western Kenya.
• The Kalahari Basin includes the Kalahari Desert surrounded by a belt of semi-desert
• The Bushveld is a tropical savanna ecoregion of Southern Africa.
• The Karoo is a semi-desert in western South Africa.

History

Prehistory

The East African Rift region is the presumed area of human origins. Homo sapiens appeared some 250,000 years ago, and spread within Africa, to Southern Africa (L1) and West Africa (L2), before also migrating out of Africa some 70,000 years ago (L3).

The Bantu expansion is a major migration movement originating in West Africa around 2500 BC, reaching East and Central Africa by 1000 BC and Southern Africa by the early centuries AD.

After the Sahara became a desert, it did not present a totally impenetrable barrier for travelers between North and South due to the application of animal husbandry towards carrying water, food, and supplies across the desert. Prior to the introduction of the camel the use of oxen for desert crossing was common, and trade routes followed chains of oases that were strung across the desert. It is thought that the camel was first brought to Egypt after the Persian Empire conquered Egypt in 525 BC, although large herds did not become common enough in North Africa to establish the trans-Saharan trade until the eighth century AD.

East Africa

The distribution of the Nilo-Saharan linguistic phylum is evidence of a certain coherence of the central Sahara, the Sahel and East Africa in prehistoric times. Ancient Nubia appears to have acted as a link connecting Ancient Egypt to sub-Saharan Africa, based on traces of prehistoric south-to-north gene flow.Kush, Nubia at her greatest phase is considered sub-saharan Africa's oldest urban civialization. Nubia was a major source of gold for the ancient world. Accordingly, the Old Nubian language is itself a member of the Nilo-Saharan phylum. Old Nubian (arguably besides Meroitic) represents the oldest attested African language outside the Afro-Asiatic group.

The Axumite Empire spanned the southern Sahara and the Sahel along the western shore of the Red Sea. Located in northern Ethiopia and Eritrea, Aksum was deeply involved in the trade network between India and the Mediterranean. Emerging from ca. the 4th century BC, it rose to prominence by the 1st century AD. It was succeeded by the Zagwe dynasty in the 10th century.

Parts of northwestern Somalia came under the control of Ethiopian Empire in the 14th century, until in 1527 a revolt under Imam Ahmad ibn Ibrihim al-Ghazi led to an invasion of Ethiopia. The Ajuran dynasty ruled parts of East Africa from the 16th to 20th centuries.

Kenya's proximity to the Arabian Peninsula invited colonization, and Arab and Persian settlements sprouted along the coast by the 8th century. During the first millennium AD, Nilotic and Bantu-speaking peoples moved into the region, and the latter now comprise three-quarters of Kenya's population. In the centuries preceding colonization, the Swahili coast of Kenya was part of the east African region which traded with the Arab world and India especially for ivory and slaves. Swahili, a Bantu language with many Arabic, Persian and other Middle Eastern and South Asian loan words, developed as a lingua franca for trade between the different peoples.

In 1498 Vasco da Gama became the first European to reach the East African coast, and by 1525 the Portuguese had subdued the entire coast. Portuguese control lasted until the early 18th century, when Arabs from Oman established a foothold in the region. Assisted by Omani Arabs, the indigenous coastal dwellers succeeded in driving the Portuguese from the area north of the Ruvuma River by the early 18th century.

West Africa

The Nok culture is known from a type of terracotta figure found in Nigeria, dating to between 500 BC and AD 200. There were a number of medieval kingdoms of the southern Sahara and the Sahel, based on trans-Saharan trade, including the Ghana Empire and the Mali Empire, Songhai Empire, the Kanem Empire and the subsequent Bornu Empire. The Benin Empire was a pre-colonial state of Nigeria (1440–1897).

The kingdoms of Ifẹ and Oyo in the western block of Nigeria became prominent about 700–900 and 1400 respectively. Another prominent kingdom in south western Nigeria was the Kingdom of Benin whose power lasted between the 15th and 19th century. Their dominance reached as far as the well known city of Eko which was named Lagos by the Portuguese traders and other early European settlers. In the 18th century, the Oyo and the Aro confederacy were responsible for most of the slaves exported from Nigeria.

Following the Napoleonic wars, the British expanded trade with the Nigerian interior. In 1885, British claims to a West African sphere of influence received international recognition and in the following year the Royal Niger Company was chartered under the leadership of Sir George Taubman Goldie. In 1900 the company's territory came under the control of the British Government, which moved to consolidate its hold over the area of modern Nigeria. On January 1, 1901 Nigeria became a British protectorate, part of the British Empire, the foremost world power at the time.

Central Africa

The Bantu expansion has its original nucleus in West Africa, dividing into a Western and an Eastern Bantu group by about 1500 BC. The Eastern group has its nucleus at Urewe, in the first half of the 1st millennium BC. There follow a series of southwards advances, establishing a Congo nucleus by the end of the 1st millennium BC. In a final movement, the Bantu expansion reaches Southern Africa in the 1st millennium AD.

Southern Africa

Settlements of Bantu-speaking peoples, who were iron-using agriculturists and herdsmen, were already present south of the Limpopo River by the 4th or 5th century (see Bantu expansion) displacing and absorbing the original Khoi-San speakers. They slowly moved south and the earliest ironworks in modern-day KwaZulu-Natal Province are believed to date from around 1050. The southernmost group was the Xhosa people, whose language incorporates certain linguistic traits from the earlier Khoi-San people, reaching the Fish River, in today's Eastern Cape Province.

Monomotapa was a medieval kingdom (c. 1250–1629) which used to stretch between the Zambezi and Limpopo rivers of Southern Africa in the modern states of Zimbabwe and Mozambique. It enjoys great fame for the ruins at its old capital of Great Zimbabwe.

In 1487, Bartolomeu Dias became the first European to reach the southernmost tip of Africa. In 1652, a victualling station was established at the Cape of Good Hope by Jan van Riebeeck on behalf of the Dutch East India Company. For most of the 17th and 18th centuries, the slowly-expanding settlement was a Dutch possession. Great Britain seized the Cape of Good Hope area in 1795, ostensibly to stop it falling into the hands of the French but also seeking to use Cape Town in particular as a stop on the route to Australia and India. It was later returned to the Dutch in 1803, but soon afterwards the Dutch East India Company declared bankruptcy, and the British annexed the Cape Colony in 1806.

The Zulu Kingdom (1817–79) was a Southern African state in what is now South Africa. The small kingdom gained world fame during and after the Anglo-Zulu War.