Fertile Crescent :
157-605: Liberia ( / l aɪ ˈ b ɪər i ə / ), officially the Republic of Liberia , is a country on the West African coast. It is bordered by Sierra Leone to its northwest , Guinea to its north , Ivory Coast to its east , and the Atlantic Ocean to its south and southwest. It has a population of around 5.5 million and covers an area of 43,000 square miles (111,369 km). The official language
314-551: A fertility statuette, created in the region of Senegambia , and may be associated with the emergence of complexly organized pastoral societies in West Africa between 4000 BCE and 1000 BCE. Though possibly developed as early as 5000 BCE, Nsibidi may have also developed in 2000 BCE, as evidenced by depictions of the West African script on Ikom monoliths at Ikom , in Nigeria . Migration of Saharan peoples south of
471-414: A "place of origin" and that they foraged outward from this home base, returning with high-quality food to share and to be processed. Over the course of the last 30 years, a variety of competing theories about how foraging occurred have been proposed, each one implying certain kinds of social strategy. The available evidence from the distribution of tools and remains is not enough to decide which theories are
628-557: A "portable culture". At the time, this was considered very significant, as portability supported the conclusion that the Oldowan tool-makers were capable of planning for future needs, by creating the tools in a location which was distant from their use. The Swartkrans site is a cave filled with layered fossil-bearing limestone deposits. Oldowan is found in Member 1 Lower Bank at 2.2-1.8 Ma in association with Paranthropus robustus and
785-512: A 2019 Forest Landscape Integrity Index mean score of 4.79/10, ranking it 116th globally out of 172 countries. Liberia is a global biodiversity hotspot —a significant reservoir of biodiversity that is under threat from humans. Endangered species are hunted for human consumption as bushmeat in Liberia. Species hunted for food in Liberia include elephants , pygmy hippopotamus , chimpanzees , leopards , duikers , and other monkeys. Bushmeat
942-518: A Dutch writer, describing Benin in his book Description of Africa (1668) ". Its craft was the most adored and treasured bronze casting in the history of Africa. It was annexed by the British Empire in 1897 during the invasion and scramble of Africa. Portuguese traders began establishing settlements along the coast in 1445, followed by the French , English , Spanish , Danish and Dutch ;
1099-678: A Monrovia beach. The coup leaders formed the People's Redemption Council (PRC) to govern the country. A strategic Cold War ally of the West, Doe received significant financial backing from the United States while critics condemned the PRC for corruption and political repression. After Liberia adopted a new constitution in 1985, Doe was elected president in subsequent elections that were internationally condemned as fraudulent. On November 12, 1985,
1256-406: A branch was separated, it could be scraped clean with a scraper, or hollowed with pointed tools. Such uses are attested by characteristic microscopic alterations of edges used to scrape wood. Oldowan tools could also have been used for preparing hides. Hides must be cut by slicing, piercing and scraping them clean of residues. Flakes are most suitable for this purpose. Lawrence Keeley , following in
1413-455: A constant presence in the rainforests here. Much research into Tbg was performed in the 1970s by Mehlitz and by Gibson, both working in Bong Mine with samples from around the country. The West African pariah dog is also a host for Tbg . West Africa West Africa , also called Western Africa , is the westernmost region of Africa . The United Nations defines Western Africa as
1570-554: A dictatorial regime, Doe was assassinated in 1990 in the context of the First Liberian Civil War which ran from 1989 until 1997 with the election of rebel leader Charles Taylor as president. In 1998, the Second Liberian Civil War erupted against his own dictatorship, and Taylor was overthrown by the end of the war in 2003. The two wars resulted in the deaths of 250,000 people (about 8% of
1727-582: A failed coup was launched by Thomas Quiwonkpa , whose soldiers briefly occupied the national radio station . Government repression intensified in response, as Doe's troops responded by executing members of the Gio and Mano ethnic groups in Nimba County . The National Patriotic Front of Liberia , a rebel group led by Charles Taylor , launched an insurrection in December 1989 against Doe's government with
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#17327979334661884-641: A few, flakes off a stone using another stone. Oldowan tools were used during the Lower Paleolithic period, 2.9 million years ago up until at least 1.7 million years ago (Ma), by ancient Hominins (early humans) across much of Africa. This technological industry was followed by the more sophisticated Acheulean industry (two sites associated with Homo erectus at Gona in the Afar Region of Ethiopia dating from 1.5 and 1.26 million years ago have both Oldowan and Acheulean tools ). The term Oldowan
2041-635: A fisheries regulations Act in 2010 and installed a satellite-based monitoring system and Senegal enacted a fisheries code in 2015. In Cape Verde, the fishermen communities of Palmiera and Santa Maria have organized themselves to protect fishing zones. Mozambique finally created a conservation area, including a coastline. West Africa, broadly defined to include the western portion of the Maghreb ( Western Sahara , Morocco , Algeria , and Tunisia ), occupies an area in excess of 6,140,000 km , or approximately one-fifth of Africa. The vast majority of this land
2198-548: A handmade quilt, Liberia's first diplomatic gift. Born into slavery in Tennessee, Ricks said, "I had heard it often, from the time I was a child, how good the Queen had been to my people—to slaves—and how she wanted us to be free." American and other international interests emphasized resource extraction, with rubber production as a major industry in the early 20th century. In 1914, Imperial Germany accounted for three-quarters of
2355-559: A higher prevalence of flake retouch. Similar tools had already been found in various locations in Europe and Asia for some time, where they were called Chellean and Abbevillian . The oldest tool sites are in the East African Rift system, on the sediments of ancient streams and lakes. This is consistent with what we surmise of the evolution of man . Abbé Breuil was the first recognized archaeologist to go on record to assert
2512-419: A million years, and would fall into the pre-human period, associated with the direct australopithecine ancestors of genus Homo . It is not clear whether the tools of such a "Lomekwian industry" bear any relation to the Oldowan industry. There are articles that address how some Oldowan tools may have been found as stones with naturally occurring shapes that dictate their ideal use, or formed as such. To form
2669-734: A report of Oldowan artefacts in a secure dating context of 1.9 to 2.4 Ma from Ain Boucherit (Ain Hanech) in Setif . Kanjera South, part of the Kanjera site complex, and Nyayanga are located on the Homa Peninsula . Kanjera South is estimated to around 2 Ma. while Nyayanga is estimated to 2.9 Ma. One of the significant excavations, in the area, is Leakey's expedition in 1932-35. In 1995, Oldowan and Plio-Pleistocene faunal remains surfaced from
2826-612: A result of increasing aridification of the Green Sahara , Central Saharan hunter-gatherers and cattle herders may have used seasonal waterways as the migratory route taken to the Niger River and Chad Basin of West Africa. In 2000 BCE, " Thiaroye Woman", also known as the " Venus of Thiaroye", may have been the earliest statuette created in Sub-Saharan West Africa; it may have particularly been
2983-526: A result of the report, President Charles D. B. King and Vice President Allen N. Yancy resigned. In the mid-20th century, Liberia gradually began to modernize with American assistance. During World War II , the United States made major infrastructure improvements to support its military efforts in Africa and Europe against Germany. It built the Freeport of Monrovia and Roberts International Airport under
3140-653: A rich ecology , with strong biodiversity and several distinct regions. The area's climate and ecology are heavily influenced by the dry Sahara to the north and east, which provides dry winds during the Harmattan , as well as the Atlantic Ocean to the south and west, which provides seasonal monsoons. This mixture of climates gives West Africa a rich array of biomes , from biodiversity-rich tropical forests to drylands supporting rare and endangered fauna such as pangolins , rhinoceros , and elephants . Because of
3297-456: A scientific designation. In the late 20th century, discovery of the discrepancies in date caused a crisis of definition. Because Abbevillian did not necessarily precede Acheulean and both traditions had flakes and bifaces, it became difficult to differentiate the two. It was in this spirit that many artifacts formerly considered Abbevillian were labeled Acheulean. In consideration of the difficulty, some preferred to name both phases Acheulean. When
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#17327979334663454-422: A single fossil attributed to Homo . The Member I assemblage also includes a shaft of pointed bone polished at the pointed end. Member I contained a high percentage of primate remains compared to other animal remains, which did not fit the hypothesis that H. habilis or P. robustus lived in the cave. C. K. Brain conducted a more detailed study and discovered the cave had been the abode of leopards, who preyed on
3611-554: A subgroup of the Igbo people. The Kingdom of Nri was unusual in the history of world government in that its leader exercised no military power over his subjects. The kingdom existed as a sphere of religious and political influence over a third of Igboland and was administered by a priest-king called an Eze Nri . The Eze Nri managed trade and diplomacy on behalf of the Nri people and possessed divine authority in religious matters. The Oyo Empire
3768-513: A supporter of Pan-Africanism . Liberia also helped to fund the Organisation of African Unity . On April 12, 1980, a military coup led by Master Sergeant Samuel Doe of the Krahn ethnic group overthrew and killed President William R. Tolbert Jr. Doe and the other plotters later executed most of Tolbert's cabinet and other Americo-Liberian government officials and True Whig Party members on
3925-614: A way to avoid slave rebellions . In 1822, the American Colonization Society began sending free people of color to the Pepper Coast voluntarily to establish a colony. Mortality from tropical diseases was high—of the 4,571 emigrants who arrived in Liberia between 1820 and 1843, only 1,819 survived. By 1867, the ACS (and state-related chapters) had assisted in the migration of more than 13,000 people of color from
4082-514: A while," while 13% cooked it once a week and 7% cooked bushmeat daily. The survey was conducted during the last civil war, and bushmeat consumption is now believed to be far higher. Trypanosoma brucei gambiense is endemic in some animal hosts here including both domestic and wild . This causes the disease nagana . In pigs here and in Ivory Coast , that includes Tbg group 1 . Tbg and its vector Glossina palpalis gambiense are
4239-496: Is English. Over 20 indigenous languages are spoken, reflecting the country's ethnic and cultural diversity. The capital and largest city is Monrovia . Liberia began in the early 19th century as a project of the American Colonization Society (ACS), which believed that black people would face better chances for freedom and prosperity in Africa than in the United States. Between 1822 and the outbreak of
4396-408: Is Isaac et al.'s tri-modal categories of "Flaked Pieces" (cores/choppers), "Detached Pieces" (flakes and fragments), "Pounded Pieces" (cobbles utilized as hammerstones, etc.) and "Unmodified Pieces" (manuports, stones transported to sites). Oldowan tools are sometimes called "pebble tools", so named because the blanks chosen for their production already resemble, in pebble form, the final product. It
4553-559: Is a currently obsolescent name for a tool tradition that is increasingly coming to be called Oldowan. The label Abbevillian prevailed until the Leakey family discovered older (yet similar) artifacts at Olduvai Gorge and promoted the African origin of man. Oldowan soon replaced Abbevillian in describing African and Asian lithics. The term Abbevillian is still used but is now restricted to Europe. The label, however, continues to lose popularity as
4710-497: Is a transnational highway project to link 12 West African coastal states, from Mauritania in the north-west of the region to Nigeria in the east, with feeder roads already existing to two landlocked countries, Mali and Burkina Faso . The eastern end of the highway terminates at Lagos , Nigeria . Economic Community of West African States (ECOWAS) consider its western end to be Nouakchott , Mauritania , or to be Dakar , Senegal , giving rise to these alternative names for
4867-545: Is also evidence that some species of Paranthropus utilized stone tools. There is presently no evidence to show that Oldowan tools were the sole creation of members of the Homo line or that the ability to produce them was a special characteristic of only our ancestors. Research on tool use by modern wild chimpanzees in West Africa shows there is an operational sequence when chimpanzees use lithic implements to crack nuts. In
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5024-414: Is characterized by mostly flat to rolling coastal plains that contain mangroves and swamps , which rise to a rolling plateau and low mountains in the northeast. Tropical rainforests cover the hills, while elephant grass and semi-deciduous forests make up the dominant vegetation in the northern sections. Liberia's watershed tends to move in a southwestern pattern toward the sea as new rains move down
5181-449: Is demographically and economically one of the fastest growing on the African continent. Early history in West Africa includes a number of prominent regional powers that dominated different parts of both the coastal and internal trade networks, such as the Mali and Gao Empires . West Africa sat at the intersection of trade routes between Arab -dominated North Africa and further south on
5338-420: Is known from Swartkrans , where a bone shaft with a polished point was discovered in Member (layer) I, dated 1.8–1.5 Ma. The Osteodontokeratic industry , the "bone-tooth-horn" industry hypothesized by Raymond Dart, is less certain. Mary Leakey classified the Oldowan tools as Heavy Duty, Light Duty, Utilized Pieces and Debitage, or waste. Heavy-duty tools are mainly cores. A chopper has an edge on one side. It
5495-452: Is not always clear which is the flake. Later tool-makers clearly identified and reworked flakes. Complaints that artifacts could not be distinguished from naturally fractured stone have helped spark careful studies of Oldowan techniques. These techniques have now been duplicated many times by archaeologists and other knappers, making misidentification of archaeological finds less likely. Use of bone tools by hominins also producing Oldowan tools
5652-508: Is not known for sure which hominin species created and used Oldowan tools. Its emergence is often associated with the species Australopithecus garhi and its flourishing with early species of Homo such as H. habilis and H. ergaster . Early Homo erectus appears to inherit Oldowan technology and refines it into the Acheulean industry beginning 1.7 million years ago. The oldest known Oldowan tools have been found at Nyayanga on
5809-525: Is not wholly within Liberia as Nimba is located at the point where Liberia borders both Guinea and Ivory Coast . Nimba is thus the tallest mountain in those countries, as well. The equatorial climate, in the south of the country, is hot year-round with heavy rainfall from May to October with a short interlude in mid-July to August. During the winter months of November to March, dry dust-laden harmattan winds blow inland, causing many problems for residents. Climate change in Liberia causes many problems as Liberia
5966-425: Is often exported to neighboring Sierra Leone and Ivory Coast, despite a ban on the cross-border sale of wild animals. Bushmeat is widely eaten in Liberia, and is considered a delicacy. A 2004 public opinion survey found that bushmeat ranked second behind fish amongst residents of the capital Monrovia as a preferred source of protein. Of households where bushmeat was served, 80% of residents said they cooked it "once in
6123-399: Is particularly vulnerable to climate change . Like many other countries in Africa , Liberia both faces existing environmental issues , as well as sustainable development challenges. Because of its location in Africa, it is vulnerable to extreme weather , the coastal effects of sea level rise , and changing water systems and water availability. Climate change is expected to severely impact
6280-625: Is plains lying less than 300 meters above sea level, though isolated high points exist in numerous states along the southern shore of West Africa. Benin Burkina Faso The Gambia Ghana Guinea-Bissau Guinea Ivory Coast Liberia Mali Mauritania Nigeria Niger Senegal Sierra Leone Togo The northern section of West Africa (narrowly defined to exclude
6437-463: Is rather majestic and looks like a huge phallus and a deformed animal or thing is protruding from it. It is said to be the dwelling place of a pangool . Ngoye njuli is protected by the Senegalese authorities and attracts visitors. In West Africa, as in other parts of Africa where the baobab tree is found, the leaves are mixed with couscous and eaten, the bark of the tree is used to make ropes, and
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6594-408: Is still somewhat contentious. Mary Leakey was the first to create a system to classify Oldowan assemblages , and built her system based on prescribed use. The system included choppers , scrapers , and pounders. However, more recent classifications of Oldowan assemblages have been made that focus primarily on manufacture due to the problematic nature of assuming use from stone artefacts. An example
6751-553: Is taken from the site of Olduvai Gorge in Tanzania , where the first Oldowan stone tools were discovered by the archaeologist Louis Leakey in the 1930s. However, some contemporary archaeologists and palaeoanthropologists prefer to use the term Mode 1 tools to designate pebble tool industries (including Oldowan), with Mode 2 designating bifacially worked tools (including Acheulean handaxes), Mode 3 designating prepared-core tools, and so forth. Classification of Oldowan tools
6908-511: Is unclear from the archaeological record when the production of Oldowan technologies ended. Other tool-making traditions seem to have supplanted Oldowan technologies by 0.25 Ma. The discovery of stone tools that predate the Oldowan, dated to as early as 3.3 Ma, at the Lomekwi site in Kenya, was announced in 2015. This age pre-dates the current estimates for the age of the genus Homo by half
7065-656: Is unifacial if the edge was created by flaking on one face of the core, or bifacial if on two. Discoid tools are roughly circular with a peripheral edge. Polyhedral tools are edged in the shape of a polyhedron. In addition there are spheroidal hammer stones. Light-duty tools are mainly flakes. There are scrapers , awls (with points for boring) and burins (with points for engraving). Some of these functions belong also to heavy-duty tools. For example, there are heavy-duty scrapers. Utilized pieces are tools that began with one purpose in mind but were utilized opportunistically. Because of their use and variation, opportunities lead to
7222-633: The African slave trade began not long after, which over the following centuries would debilitate the region's economy and population. The slave trade also encouraged the formation of states such as the Bono State , Bambara Empire and Dahomey , whose economic activities include but not limited to exchanging slaves for European firearms . In the early 19th century, a series of Fulani reformist jihads swept across Western Africa. The most notable include Usman dan Fodio 's Fulani Empire , which replaced
7379-588: The American Civil War in 1861, more than 15,000 freed and free-born African Americans , along with 3,198 Afro-Caribbeans , relocated to Liberia. Gradually developing an Americo-Liberian identity, the settlers carried their culture and tradition with them while colonizing the indigenous population. Led by the Americo-Liberians, Liberia declared independence on July 26, 1847, which the U.S. did not recognize until February 5, 1862. Liberia
7536-560: The Benue Trough , and others on a line running from Mount Cameroon to Lake Chad . Colonial boundaries are reflected in the modern boundaries between contemporary West African states, cutting across ethnic and cultural lines, often dividing single ethnic groups between two or more states. In contrast to most of Central, Southern, and Southeast Africa, West Africa is not populated by Bantu -speaking peoples. The West African region can be divided into four climatic sub-regions namely
7693-679: The Cestos River , all of which flow into the Atlantic. The Cavalla is the longest river in the nation at 320 miles (510 km). The highest point wholly within Liberia is Mount Wuteve at 4,724 feet (1,440 m) above sea level in the northwestern Liberia range of the West Africa Mountains and the Guinea Highlands . Mount Nimba , near Yekepa , is higher at 1,752 metres (5,748 ft) above sea level , but
7850-727: The Hausa city-states, Seku Amadu 's Massina Empire , which defeated the Bambara, and El Hadj Umar Tall 's Toucouleur Empire , which briefly conquered much of modern-day Mali. However, the French and British continued to advance in the Scramble for Africa , subjugating kingdom after kingdom. With the fall of Samory Ture's established Wassoulou Empire in 1898 and the Ashanti queen Yaa Asantewaa in 1902, most West African military resistance to colonial rule resulted in failure. Part of
8007-519: The Kru and Grebo from their inland chiefdoms. Americo-Liberians formed into a small elite that held disproportionate political power, while indigenous Africans were excluded from birthright citizenship in their own land until 1904. In 1980, political tensions from the rule of William R. Tolbert resulted in a military coup , marking the end of Americo-Liberian rule and the seizure of power of Liberia's first indigenous leader, Samuel Doe . Establishing
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#17327979334668164-623: The Lend-Lease program before its entry into the Second World War. After the war, President William Tubman encouraged foreign investment, with Liberia achieving the second-highest rate of economic growth in the world during the 1950s. In international affairs, it was a founding member of the United Nations , a vocal critic of South African apartheid , a proponent of African independence from European colonial powers, and
8321-1085: The Middle Stone Age (MSA) indicates that core and flake technologies have been present in West Africa since at least the Chibanian (~780–126 thousand years ago or ka ) in northern, open Sahelian zones, and that they persisted until the Terminal Pleistocene / Holocene boundary (~12 ka) in both northern and southern zones of West Africa. This makes them the youngest examples of such MSA technology anywhere in Africa. The presence of MSA populations in forests remains an open question. Technological differences may correlate with various ecological zones . Later Stone Age (LSA) populations evidence significant technological diversification, including both microlithic and macrolithic traditions. The record shows that aceramic and ceramic LSA assemblages in West Africa overlap chronologically, and that changing densities of microlithic industries from
8478-513: The Second Liberian Civil War in 2003. In November 2011, President Sirleaf was re-elected for a second six-year term. Following the 2017 Liberian general election , former professional football striker George Weah , considered one of the greatest African players of all time, was sworn in as president on January 22, 2018, becoming the fourth youngest serving president in Africa. The inauguration marked Liberia's first fully democratic transition in 74 years. Weah cited fighting corruption, reforming
8635-751: The Senegambia region (Senegal and the Gambia) used to have a diverse wildlife including lions , hippopotamus , elephants , antelopes , leopards etc. However, during colonization, the European colonizers such as the French and British killed most of the wildlife particularly the lions, using their body parts as trophies. By the turn of the 20th century, the Senegambia region had lost most of its lion population and other exotic animals due to poaching . By
8792-429: The economy of Liberia , especially agriculture, fisheries, and forestry. Liberia has been an active participant in international and local policy changes related to climate change. Forests on the coastline are composed mostly of salt-tolerant mangrove trees, while the more sparsely populated inland has forests opening onto a plateau of drier grasslands . The climate is equatorial , with significant rainfall during
8949-459: The forest-savanna region, were ultimately acculturated and admixed into the larger groups of West African agriculturalists , akin to the migratory Bantu -speaking agriculturalists and their encounters with Central African hunter-gatherers . The development of the region's economy allowed more centralized states and civilizations to form, beginning with Dhar Tichitt that began in 1600 B.C. followed by Djenné-Djenno beginning in 300 B.C. This
9106-560: The population history of West Africa . Acheulean tool-using archaic humans may have dwelled throughout West Africa since at least between 780,000 BP and 126,000 BP ( Middle Pleistocene ). During the Pleistocene , Middle Stone Age peoples (e.g., Iwo Eleru people , possibly Aterians ), who dwelled throughout West Africa between MIS 4 and MIS 2 , were gradually replaced by incoming Late Stone Age peoples , who migrated into West Africa as an increase in humid conditions resulted in
9263-576: The 10th-century Kingdom of Nri , which helped birth the arts and customs of the Igbo people , Bono State in the 11th century, which gave birth to the numerous Akan States, while Ife rose to prominence around the 12th century. Further east, Oyo arose as the dominant Yoruba state and the Aro Confederacy as a dominant Igbo state in modern-day Nigeria. The Kingdom of Nri was a West African medieval state in present-day southeastern Nigeria and
9420-491: The 16 countries of Benin , Burkina Faso , Cape Verde , The Gambia , Ghana , Guinea , Guinea-Bissau , Ivory Coast , Liberia , Mali , Mauritania , Niger , Nigeria , Senegal , Sierra Leone , and Togo , as well as Saint Helena, Ascension and Tristan da Cunha ( United Kingdom Overseas Territory ). The population of West Africa is estimated at 419 million people as of 2021, and at 381,981,000 as of 2017, of which 189,672,000 were female and 192,309,000 male. The region
9577-494: The 1930s, the Gambian elephant population became extinct. That phenomenon was not only limited to the Senegambia region but affected much of West Africa as the region lost much of its "natural resources once tied so closely to its cultural identity. Poaching has stolen most of its wildlife." The British issued poaching licenses, and although they would later try to reverse the damage that had been done by attempting to preserve what
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#17327979334669734-418: The 1950s. Some have identified the two recent decades as a recovery period. Others refer to this as a period of "hydrological intensification" with much of the annual rainfall increase coming from more severe rain events and sometimes flooding rather than more frequent rainfall, or similarly other works underline the continuity of the drought even though the rainfall has increased. Since 1985, 54 percent of
9891-482: The 20th century, repeating patterns of European colonists in other nations in Africa. Competition for office was usually contained within the party; a party nomination virtually ensured election. Pressure from the United Kingdom, which controlled Sierra Leone to the northwest, and France, with its interests in the north and east, led to a loss of Liberia's claims to extensive territories. Both Sierra Leone and
10048-630: The Atlantic Ocean. The Dei , Bassa , Kru , Gola , and Kissi were some of the earliest documented peoples in the area. This influx of these groups was compounded by the decline of the Mali Empire in 1375 and the Songhai Empire in 1591. As inland regions underwent desertification , inhabitants moved to the wetter coast. These new inhabitants brought skills such as cotton spinning , cloth weaving , iron smelting , rice and sorghum cultivation, and social and political institutions from
10205-559: The Atlantic. Due to Mauritania's increasingly close ties to the Arab World and its 1999 withdrawal from the Economic Community of West African States (ECOWAS), in modern times it is often considered, especially in Africa, as now part of western North Africa . Major and principal cities in West Africa include, geographically eastward: Before European colonisation , West African countries such as those from
10362-464: The Guinea Coast associated with a reduction of the wet spells under both 1.5 °C and 2 °C global warming level. A Trans-ECOWAS project, established in 2007, plans to upgrade railways in this zone. One of the goals of the Economic Community of West African States (ECOWAS) is the development of an integrated railroad network. Aims include the extension of railways in member countries,
10519-684: The Guinea Coast, Soudano-Sahel, Sahel (extending eastward to the Ethiopian border) and the Sahara, each with different climatic conditions. The seasonal cycle of rainfall is mainly driven by the south-north movement of the Inter-Tropical Convergence Zone (ITCZ) which is characterised by the confluence between moist southwesterly monsoon winds and the dry northeasterly Harmattan. Based on the inter-annual rainfall variability, three main climatic periods have been observed over
10676-589: The Homa Peninsula in Kenya and are dated to ~2.9 Ma. The Oldowan tools were associated with Paranthropus teeth and two butchered hippo skeletons. Early Oldowan tools are also known from Gona in Ethiopia (near the Awash River ), and are dated to about 2.6 Ma. The use of tools by apes including chimpanzees and orangutans can be used to argue in favour of tool-use as an ancestral feature of
10833-431: The Ivory Coast annexed territories. Liberia struggled to attract investment to develop infrastructure and a larger, industrial economy. There was a decline in the production of Liberian goods in the late 19th century, and the government struggled financially, resulting in indebtedness on a series of international loans. On July 16, 1892, Martha Ann Erskine Ricks met Queen Victoria at Windsor Castle and presented her with
10990-451: The Ivory Coast, have lost large areas of their rainforest . In 2005, the Food and Agriculture Organization of the United Nations ranked Nigeria as the state with the worst deforestation rate in the entire world. Causes include logging, subsistence agriculture , and the collection of fuelwoods. According to a ThoughtCo publication authored Steve Nix (2018), almost 90 percent of West Africa's original rainforest has been destroyed, and
11147-524: The Leakey family, primarily Mary Leakey , but also her husband Louis and their son, Richard . Mary Leakey organized a typology of Early Pleistocene stone tools, which developed Oldowan tools into three chronological variants, A, B and C. Developed Oldowan B is of particular interest due to changes in morphology that appear to have been driven mostly by the short term availability of a chert resource from 1.65 to 1.53 Ma. The flaking properties of this new resource resulted in considerably more core reduction and
11304-745: The Mali and Songhai empires. Shortly after the Mane conquered the region, the Vai people of the former Mali Empire immigrated into the Grand Cape Mount County region. The ethnic Kru opposed the influx of Vai, forming an alliance with the Mane to stop further influx of Vai. People along the coast built canoes and traded with other West Africans from Cap-Vert to the Gold Coast . Between 1461 and
11461-475: The May–October rainy season and harsh harmattan winds the remainder of the year. Liberia possesses about forty percent of the remaining Upper Guinean rainforest . It was an important producer of rubber in the early 20th century. Four terrestrial ecoregions lie within Liberia's borders: Guinean montane forests , Western Guinean lowland forests , Guinean forest–savanna mosaic , and Guinean mangroves . It had
11618-531: The Niger River basin between eastern Ghana and western Nigeria (northern Benin), rice ( oryza glaberrima ) in the Inner Niger Delta region of Mali, pearl millet ( cenchrus americanus ) in northern Mali and Mauritania, and cowpeas in northern Ghana. After having persisted as late as 1000 BP, or some period of time after 1500 CE, remaining West African hunter-gatherers, many of whom dwelt in
11775-575: The SCSL for trial in The Hague . In 2006, the government established a Truth and Reconciliation Commission to address the causes and crimes of the civil war. In 2011, July 26 was proclaimed by President Sirleaf as National Independence Day. In October 2011, peace activist Leymah Gbowee received the Nobel Peace Prize in her work of leading a women's peace movement that brought to an end to
11932-597: The Sahel: the wet period from 1950 to the early 1960s followed by a dry period from 1972 to 1990 and then the period from 1991 onwards which has seen a partial rainfall recovery. During the dry period, the Sahel experienced a number of particularly severe drought events, with devastating effects. The recent decades, have also witnessed a moderate increment in annual rainfall since the beginning of 1990s. However, total annual rainfall remains significantly below that observed during
12089-567: The Sahelian region resulted in seasonal interaction with and gradual absorption of West African hunter-gatherers, who primarily dwelt in the savannas and forests of West Africa. In West Africa, which may have been a major regional cradle in Africa for the domestication of crops and animals, Niger-Congo speakers domesticated the helmeted guineafowl between 5500 BP and 1300 BP; domestication of field crops occurred throughout various locations in West Africa, such as yams (d. praehensilis) in
12246-672: The Southern states, which had strong political power in the American government, declared their secession and the formation of the Confederacy . The leadership of the new nation consisted largely of the Americo-Liberians , who at the beginning established political and economic dominance in the coastal areas that the ACS had purchased; they maintained relations with the United States and contacts in developing these areas and
12403-661: The United States and the Caribbean to Liberia. These free African Americans and their descendants married within their community and came to identify as Americo-Liberians . Many were of mixed race and educated in American culture; they did not identify with the indigenous natives of the tribes they encountered. They developed an ethnic group that had a cultural tradition infused with American notions of political republicanism and Protestant Christianity. The ACS, supported by prominent American politicians such as Abraham Lincoln , Henry Clay , and James Monroe , believed "repatriation"
12560-514: The West African regions underwent an increase in the numeracy level throughout the 19th century. The reason for such a growth was predetermined by a number of factors. Namely, the peanut production and trade, which was boosted by the demand of the colonial states . Importantly, the rise of numeracy was higher in the regions which were less hierarchical and had less dependence on the slavery trade (e.g. Sine and Salum). Whereas areas with
12717-541: The archaeology of the city of Kumbi Saleh in modern-day Mauritania, the Mali empire came to dominate much of the region until its defeat by Almoravid invaders in 1052. Three great kingdoms were identified in Bilad al-Sudan by the ninth century. They included Ghana, Gao and Kanem . The Sosso Empire sought to fill the void but was defeated ( c. 1240 ) by the Mandinka forces of Sundiata Keita , founder of
12874-519: The artifacts at sites EG10 and EG12 were composed of trachyte ) indicating a selectivity in the quality of stone used. Recent excavations have yielded tools in association with cut-marked bones, indicating that Oldowan were used in meat-processing or -acquiring activities. The second oldest known Oldowan tool site comes from the Shungura formation of the Omo River basin. This formation documents
13031-602: The artifacts found are classified as Oldowan or KBS Oldowan dated from 1.9–1.7 Ma, Karari (or "advanced Oldowan") dated to 1.6–1.4 Ma, and some early Acheulean at the end of the Karari. Over 200 hominins have been found, including Australopithecus and Homo . In the Nachukui site in West Turkana, around 500 stone tools were found at a site named Naiyena Engol 2, or NY2. The assemblage at NY2 dates back to 1.8–1.7 Ma, around
13188-657: The backing of neighboring countries such as Burkina Faso and Ivory Coast . This triggered the First Liberian Civil War . By September 1990, Doe's forces controlled only a small area just outside the capital, and Doe was captured and executed in that month by rebel forces. The rebels soon split into conflicting factions. The Economic Community Monitoring Group under the Economic Community of West African States organized an armed intervention. Between 1989 and 1997, around 60,000 to 80,000 Liberians died, and, by 1996, around 700,000 others had been displaced into refugee camps in neighboring countries. A peace deal between warring parties
13345-562: The best meat, and the hominins had only scavenged. The counter view is that while hunting many large animals would be beyond the reach of an individual human, groups could bring down larger game, as pack hunting animals are capable of doing. Moreover, since many animals both hunt and scavenge, it is possible that hominins hunted smaller animals, but were not above driving carnivores from larger kills, as they probably were driven from kills themselves from time to time. A complete catalog of Oldowan sites would be too extensive for listing here. Some of
13502-562: The better-known sites include the following: Sites in the Gona river system in the Hadar region of the Afar triangle , excavated by Helene Roche, J. W. Harris and Sileshi Semaw, yielded some of the oldest known Oldowan assemblages, dating to about 2.6 million years ago. Raw material analysis done by Semaw showed that some assemblages in this region are biased towards a certain material (e.g.: 70% of
13659-575: The central rift of Kenya since the 1970s with excavations by John Gowlett for his PhD. More recently, Oldowan technology has also been discovered in Kilombe Caldera in an unusual high altitude setting. The stone tools are associated with fossils and have been dated to 1.8 Ma, with Acheulian stone tools occurring in overlying levels. The Oldowan industry is named after discoveries made in the Olduvai Gorge of Tanzania in east Africa by
13816-539: The coast to the north are geographically structured. These features may represent social networks or some form of cultural diffusion allied to changing ecological conditions. Microlithic industries with ceramics became common by the Mid-Holocene , coupled with an apparent intensification of wild food exploitation. Between ~4–3.5 ka, these societies gradually transformed into food producers, possibly through contact with northern pastoralists and agriculturalists, as
13973-515: The colony of Guinea-Bissau , while Germany claimed Togoland , but was forced to divide it between France and Britain following First World War due to the Treaty of Versailles . Only Liberia retained its independence, at the price of major territorial concessions. Following World War II , nationalist movements arose across West Africa. In 1957, Ghana, under Kwame Nkrumah , became the first West African colony to achieve its independence, followed
14130-536: The continent, the source of specialized goods such as gold , advanced iron-working , and ivory . After European exploration encountered rich local economies and kingdoms, the Atlantic slave trade built on already existing slave systems to provide labor for colonies in the Americas. After the end of the slave trade in the early 19th century , European nations, especially France and Britain , continued to exploit
14287-475: The country's wealth and development. President William Tubman encouraged economic and political changes that heightened the country's prosperity and international profile; Liberia was a founding member of the League of Nations , United Nations , and the Organisation of African Unity . The Americo-Liberian settlers did not relate well to the indigenous peoples they encountered. Colonial settlements were raided by
14444-423: The course of nut cracking, sometimes they will create unintentional flakes. Although the morphology of the chimpanzees' hammer is different from the Oldowan hammer, chimpanzees' ability to use stone tools indicates that the earliest lithic industries were probably not produced by only one kind of hominin species. Findings from fossil evidence and experimental replication of stone-tool users and manufacturers suggest
14601-465: The earliest pottery in Africa – by at least 9400 BCE, and along with their pottery, as well as wielding independently invented bows and arrows , migrated into the Central Sahara, which became their primary region of residence by 10,000 BP. The emergence and expansion of ceramics in the Sahara may be linked with the origin of Round Head and Kel Essuf rock art, which occupy rockshelters in
14758-542: The economy, combating illiteracy, and improving living conditions as the main targets of his presidency. Opposition leader Joseph Boakai defeated Weah in the tightly contested 2023 presidential election . On 22 January 2024, Boakai was sworn in as Liberia's new president. Liberia is situated in West Africa , bordering the North Atlantic Ocean to the country's southwest. It lies between latitudes 4° and 9°N , and longitudes 7° and 12°W . The landscape
14915-619: The edges by removing very small chips so as to straighten and sharpen the edge. Typically but not necessarily the reworking is accomplished by pressure flaking. While the exact hominid is up for debate, it is believed that some of the first Oldowan makers did fall within the Homo line. However, fossil evidence showed evolutionary features for human precision grip capabilities in Australopithecines. This leads to current anthropological thinking in which Oldowan tools were made by late Australopithecus and early Homo . Homo habilis
15072-544: The end of colonialism, the region has been the stage for some brutal conflicts, including: Geopolitically , the United Nations definition of subregion Western Africa includes the preceding states with the addition of Mauritania (which withdrew from ECOWAS in 1999), comprising an area of approximately 6.1 million square km. The UN region also includes the United Kingdom Overseas Territory of Saint Helena, Ascension and Tristan da Cunha in
15229-507: The environment became more arid. Hunter-gatherers have survived in the more forested parts of West Africa until much later, attesting to the strength of ecological boundaries in this region. The Pepper Coast , also known as the Grain Coast, has been inhabited by indigenous peoples of Africa at least as far back as the 12th century. Mande -speaking people expanded from the north and east, forcing many smaller ethnic groups southward toward
15386-498: The existence of Oldowan tools. While his description was for "Chello- Abbevillean " tools, and post-dated Leakey's finds at Olduvai Gorge by at least ten years, his descriptions nonetheless represented the scholarly acceptance of this technology as legitimate. These findings were cited as being from the location of the Vaal River , at Vereeniging , and Breuil noted the distinct absence of a significant number of cores, suggesting
15543-463: The following October. The subsequent 2005 elections were internationally regarded as the freest and fairest in Liberian history. Ellen Johnson Sirleaf , a US-educated economist, former Minister of Finance and future Nobel Prize for Peace winner, was elected as the first female president in Africa. Upon her inauguration, Sirleaf requested the extradition of Taylor from Nigeria and transferred him to
15700-413: The footsteps of Sergei Semenov, conducted microscopic studies (with a high-powered optical microscope) on the edges of tools manufactured de novo and used for the originally speculative purposes described above. He found that the marks were characteristic of the use and matched marks on prehistoric tools. Studies of the cut marks on bones using an electron microscope produce a similar result. Abbevillian
15857-600: The forested plateau off the inland mountain range of Guinée Forestière , in Guinea . Cape Mount near the border with Sierra Leone receives the most precipitation in the nation. Liberia's main northwestern boundary is traversed by the Mano River while its southeast limits are bounded by the Cavalla River . Liberia's three largest rivers are St. Paul exiting near Monrovia , the river St. John at Buchanan , and
16014-492: The frequent modification of tools for either labor or forms of signaling has been proposed as a cause for the different shapes of similar tools. Oldowan tools were probably used for many purposes, which have been discovered from observation of modern apes and hunter-gatherers. Nuts and bones are cracked by hitting them with hammer stones on a stone used as an anvil. Battered and pitted stones testify to this possible use. Heavy-duty tools could be used as axes for woodworking. Once
16171-579: The fruit and seeds are used for drinks and oils. West Africa is greatly affected by deforestation and has one of the worst deforestation rate. Even "the beloved baobab tree" which is viewed as sacred by some West African cultures are under threat due to climate change , urbanization and population growth. "Huge swaths of forest are being razed to clear space for palm oil and cocoa plantations. Mangroves are being killed off by pollution. Even wispy acacias are hacked away for use in cooking fires to feed growing families." Nigeria, Liberia, Guinea, Ghana and
16328-404: The general shape of an Oldowan tool, a roughly spherical hammerstone is struck on the edge, or striking platform , of a suitable core rock to produce a conchoidal fracture with sharp edges useful for various purposes. The process is often called lithic reduction . The chip removed by the blow is the flake . Some of these flakes can be used as tools, provided the aforementioned conditions for
16485-510: The hominin family. Tools made from bone, wood, or other organic materials were therefore in all probability used before the Oldowan. Oldowan stone tools are simply the oldest recognisable tools which have been preserved in the archaeological record. There is a flourishing of Oldowan tools in eastern Africa, spreading to southern Africa, between 2.4 and 1.7 Ma. At 1.7 Ma., the first Acheulean tools appear even as Oldowan assemblages continue to be produced. Both technologies are occasionally found in
16642-680: The hominins, but archaeologists believe that they would be the strongest candidates for tool manufacture. There are no hominins in those layers, but the same layers elsewhere in the Omo valley contain Paranthropus and early Homo fossils. Paranthropus occurs in the preceding layers. In the last layer at 1.4 million years ago is only Homo erectus . Along the Nile River, within the 100-foot terrace, evidence of Chellean or Oldowan cultures has been found. In November 2018 Science published
16799-434: The huge expanse of time and the multiplicity of species associated with possible Oldowan tools, it is difficult to be more precise than this, since it is almost certain that different social groupings were used at different times and in different places. There is also the question of what mix of hunting, gathering and scavenging the tool users employed. Early models focused on the tool users as hunters. The animals butchered by
16956-534: The human population relies. West Africa is west of an imagined north-south axis lying close to 10° east longitude . The Atlantic Ocean forms the western as well as the southern borders of the West African region. The northern border is the Sahara Desert , with the Ranishanu Bend generally considered the northernmost part of the region. The eastern border is less precise, with some placing it at
17113-823: The indigenous peoples they encountered, especially those in communities of the more isolated " bush ". The colonial settlements were raided by the Kru and Grebo from their inland chiefdoms. Encounters with tribal Africans in the bush often became violent. Believing themselves different from and culturally and educationally superior to the indigenous peoples, the Americo-Liberians developed as an elite minority that created and held on to political power. The Americo-Liberian settlers adopted clothing such as hoop skirts and tailcoats and generally viewed themselves as culturally and socially superior to indigenous Africans. Indigenous tribesmen did not enjoy birthright citizenship in their own land until 1904. Americo-Liberians encouraged religious organizations to set up missions and schools to educate
17270-535: The indigenous peoples. On July 26, 1847, the settlers issued a Declaration of Independence and promulgated a constitution . Based on the political principles of the United States Constitution , it established the independent Republic of Liberia. On August 24, Liberia adopted its 11-striped national flag . The United Kingdom was the first country to recognize Liberia's independence. The United States did not recognize Liberia until 1862, after
17427-514: The initial stone are met before modification. Below the point of impact on the core is a characteristic bulb with fine fissures on the fracture surface. The flake evidences ripple marks. The materials of the tools were for the most part quartz , quartzite , basalt , or obsidian , and later flint and chert . Any rock that can hold an edge will do. The main source of these rocks is river cobbles, which provide both hammer stones and striking platforms. The earliest tools were simply split cobbles. It
17584-649: The interconnection of previously isolated railways and the standardization of gauge, brakes, couplings, and other parameters. The first line would connect the cities and ports of Lagos , Cotonou , Lomé and Accra and would allow the largest container ships to focus on a smaller number of large ports, while efficiently serving a larger hinterland . This line connects 3 ft 6 in ( 1,067 mm ) gauge and 1,000 mm ( 3 ft 3 + 3 ⁄ 8 in ) metre gauge systems, which would require four rail dual gauge , which can also provide standard gauge . The Trans–West African Coastal Highway
17741-449: The large number of bones at many sites, too large to be the work of one individual, and all of the scatter patterns implying many different individuals. Since modern primates in Africa have fluid boundaries between groups, as individuals enter, become the focus of bands, and others leave, it is also probable that the tools we find are the result of many overlapping groups working the same territories, and perhaps competing over them. Because of
17898-537: The late 17th century, Portuguese , Dutch , and British traders had contacts and trading posts in the region. The Portuguese named the area Costa da Pimenta ("Pepper Coast") but it later came to be known as the Grain Coast , due to the abundance of melegueta pepper grains. The traders would barter commodities and goods with local people. In the United States, there was a movement to settle African Americans , both free-born and formerly enslaved, in Africa. This
18055-629: The mid-17th to the late 18th century, holding sway not only over most of the other kingdoms in Yorubaland , but also over nearby African states, notably the Fon Kingdom of Dahomey in the modern Republic of Benin to the west. The Benin Empire was a post-classical empire located in what is now southern Nigeria . Its capital was Edo, now known as Benin City , Edo . It should not be confused with
18212-474: The modern-day country called Benin , formerly called Dahomey . The Benin Empire was "one of the oldest and most highly developed states in the coastal hinterland of West Africa, dating perhaps to the eleventh century CE". The Benin Empire was governed by a sovereign Emperor with hundreds of thousands of soldiers and a powerful council rich in resources, wealth, ancient science and technology with cities described as beautiful and large as Haarlem . " Olfert Dapper ,
18369-400: The most probable. However, three main groups of theories predominate. Each group of models implies different grouping and social strategies, from the relative altruism of central base models to the relatively disjointed search models. (See also central foraging theory and Lewis Binford .) Hominins probably lived in social groups that had contact with others. This conclusion is supported by
18526-592: The new Mali Empire. The Mali Empire continued to flourish for several centuries, most particularly under Sundiata's grandnephew Musa I , before a succession of weak rulers led to its collapse under Mossi , Tuareg and Songhai invaders. In the 15th century, the Songhai would form a new dominant state based on Gao , in the Songhai Empire , under the leadership of Sonni Ali and Askia Mohammed . Meanwhile, south of Sudan, strong city-states arose in Igboland , such as
18683-514: The next year by France's colonies (Guinea in 1958 under the leadership of President Ahmed Sekou Touré); by 1974, West Africa's nations were entirely autonomous. Since independence, many West African nations have been submerged under political instability, with notable civil wars in Nigeria, Sierra Leone, Liberia, and Ivory Coast, and a succession of military coups in Ghana and Burkina Faso . Since
18840-578: The north; the second, the Iron Age empires that consolidated both intra-Africa, and extra-Africa trade, and developed centralized states; third, major polities flourished, which would undergo an extensive history of contact with non-Africans; fourth, the colonial period, in which Great Britain and France controlled nearly the entire region; and fifth, the post-independence era, in which the current nations were formed. West African populations were considerably mobile and interacted with one another throughout
18997-576: The northwest of the country, launched an armed insurrection against Taylor. In March 2003, a second rebel group, Movement for Democracy in Liberia , began launching attacks against Taylor from the southeast. Peace talks between the factions began in Accra in June of that year, and Taylor was indicted by the Special Court for Sierra Leone (SCSL) for crimes against humanity the same month. By July 2003,
19154-523: The number of eligible voters. (The loser actually received around 60% of the eligible vote.) Soon after, allegations of modern slavery in Liberia led the League of Nations to establish the Christy Commission . Findings included government involvement in widespread "forced or compulsory labour". Minority ethnic groups especially were exploited in a system that enriched well-connected elites. As
19311-490: The number of registered trawlers operating in African waters, increase the monitoring and control and set up regional fisheries organizations. Some steps have already been taken in the form of WARFP (the World Bank's West Africa Regional Fisheries Program which empowers west-African countries (i.e. Liberia, Sierra Leone, Cape Verde, and Senegal) with information, training and monitoring systems. Furthermore, Liberia enacted
19468-453: The opposite trends illustrated opposite tendencies (e.g. central and northern Senegal). Those patterns were further even more stimulated by the French colonial campaign. Britain controlled the Gambia, Sierra Leone, Ghana, and Nigeria throughout the colonial era, while France unified Senegal, Guinea, Mali, Burkina Faso, Benin, Ivory Coast, and Niger into French West Africa . Portugal founded
19625-421: The peak of the Oldowan period. At the site, freehand flaking was observed to be the most common type of technique for making these tools. A common theme among sites in West Turkana is the high percentage of small flake tools gathered in the assemblages. However, NY2 seems to lack many of these tools, indicating a low productivity rate of flakes. Acheulian stone tools have been known about at Kilombe Main site in
19782-400: The population has been affected by five or more floods in the 17 Sahel region countries. In 2012, severe drought conditions in the Sahel were reported. Governments in the region responded quickly, launching strategies to address the issue. The region is projected to experience changes in rainfall regime, with climate models suggesting that decreases in wet season rainfall are more likely in
19939-467: The population) and the displacement of many more, with Liberia's economy shrinking by 90%. A peace agreement in 2003 led to democratic elections in 2005 . The country has remained relatively stable since then. The presence of Oldowan artifacts in West Africa was confirmed by Michael Omolewa , attesting to the presence of ancient humans. Undated Acheulean (ESA) artifacts are well documented across West Africa . The emerging chronometric record of
20096-429: The presence of physical characteristics of hand morphology for precise stone tool making. The makers of Oldowan tools were mainly right-handed. " Handedness " ( lateralization ) had thus already evolved, though it is not clear how related to modern lateralization it was, since other animals show handedness as well. In the mid-1970s, Glynn Isaac touched off a debate by proposing that human ancestors of this period had
20253-469: The pressure for economic development, many of these ecologies are threatened by processes like deforestation , biodiversity loss , overfishing , pollution from mining , plastics and other industries, and extreme changes resulting from climate change in West Africa . The history of West Africa can be divided into five major periods: first, its prehistory, in which the first human settlers arrived, developed agriculture , and made contact with peoples to
20410-550: The rebels had launched an assault on Monrovia . Under heavy pressure from the international community and the domestic Women of Liberia Mass Action for Peace movement, Taylor resigned in August 2003 and went into exile in Nigeria . A peace deal was signed later that month. The United Nations Mission in Liberia began arriving in September 2003 to provide security and monitor the peace accord, and an interim government took power
20567-447: The region through colonial relationships . For example, they continued exporting a number of extractive goods , including labor-intensive agricultural crops like cocoa and coffee , forestry products like tropical timber , and mineral resources like gold. Since independence, many West African countries, like Ivory Coast , Ghana , Nigeria and Senegal , have played important roles in the regional and global economies. West Africa has
20724-521: The region's wildlife populations, there are still some protected nature reserves within the region. Some of these include: West Africa is also home to several baobab trees and other plant life . Some baobab trees are several centuries old and form part of the local folklore, for example, a mythical baobab tree named Ngoye njuli in Senegal which is regarded as a sacred site by the Serer . The tree itself
20881-453: The rest is "heavily fragmented and in a degraded state, being poorly used." Overfishing is a major issue in West Africa. Besides reducing fish stocks in the region, it also threatens food security and the livelihoods of many coastal communities that largely depend on artisanal fishing . The overfishing generally comes from foreign trawlers operating in the region. To combat the overfishing, Greenpeace has recommended countries reduce
21038-480: The resulting trade. Their passage of the 1865 Ports of Entry Act prohibited foreign commerce with the inland tribes, ostensibly to "encourage the growth of civilized values" before such trade was allowed in the region. By 1877, the True Whig Party was the country's most powerful political entity. It was made up primarily of Americo-Liberians, who maintained social, economic and political dominance well into
21195-467: The road: The capitals' airports include: Of the sixteen, the most important hub and entry point to West Africa are Kotoka International Airport , and Murtala Muhammed International Airport , offering many international connections. Oldowan Europe : Africa : Siberia : The Oldowan (or Mode I ) was a widespread stone tool archaeological industry (style) in prehistory . These early tools were simple, usually made by chipping one, or
21352-886: The same areas, dating to the same time periods. This realisation required a rethinking of old cultural sequences in which the more "advanced" Acheulean was supposed to have succeeded the Oldowan. The different traditions may have been used by different species of hominins living in the same area, or multiple techniques may have been used by an individual species in response to different circumstances. Sometime before 1.8 Ma Homo erectus had spread outside of Africa, reaching as far east as Java by 1.8 Ma and in Northern China by 1.66 Ma. In these newly colonised areas, no Acheulean assemblages have been found. In China, only "Mode 1" Oldowan assemblages were produced, while in Indonesia stone tools from this age are unknown. By 1.8 Ma early Homo
21509-672: The same regions (e.g., Djado , Acacus , Tadrart ). Hunters in the Central Sahara farmed, stored, and cooked undomesticated central Saharan flora , underwent domestication of antelope , and domesticated and shepherded Barbary sheep . After the Kel Essuf Period and Round Head Period of the Central Sahara, the Pastoral Period followed. Some of the hunter-gatherers who created the Round Head rock art may have adopted pastoral culture, and others may have not. As
21666-626: The sediments of the Plio-Pleistocene and provides a record of the hominins that lived there. Lithic assemblages have been classified as Oldowan in members E and F in the lower Omo basin. Although there have been lithic assemblages found in multiple sites in these areas, only the Omo sites 57 and 123 in member F are accepted as hominin lithic remains. The assemblages at Omo sites 71 and 84 in member E do not show evidence of hominin modification and are therefore classified as natural assemblages. The tools are never found in direct association with
21823-411: The site. and in 2015 excavations led to the discovery of the earliest Oldowan stone tool technology in association with Paranthropus fossils and butchered hippo remains from Nyayanga. The numerous Koobi Fora sites on the east side of Lake Turkana are now part of Sibiloi National Park . Sites were initially excavated by Richard Leakey, Meave Leakey , Jack Harris, Glynn Isaac and others. Currently
21980-748: The south Atlantic Ocean . In the United Nations scheme of African regions , the region of Western Africa includes 16 states and the United Kingdom Overseas Territory of Saint Helena, Ascension and Tristan da Cunha : Mali , Burkina Faso , Senegal and the Niger are mostly in the Sahel , a transition zone between the Sahara desert and the Sudanian Savanna ; Benin , Ivory Coast , The Gambia , Ghana , Guinea , Guinea-Bissau , Liberia , Sierra Leone , Togo and Nigeria compose most of Guinea ,
22137-538: The subsequent expansion of the West African forest . West African hunter-gatherers occupied western Central Africa (e.g., Shum Laka ) earlier than 32,000 BP, dwelled throughout coastal West Africa by 12,000 BP, and migrated northward between 12,000 BP and 8000 BP as far as Mali, Burkina Faso, and Mauritania. During the Holocene , Niger-Congo speakers independently created pottery in Ounjougou , Mali –
22294-491: The tools include waterbuck , hartebeest , springbok , pig and zebra . However, the disposition of the bones allows some question about hominin methods of obtaining meat. That they were omnivores is unquestioned, as the digging implement and the probable use of hammer stones to smash nuts indicate. Lewis Binford first noticed that the bones at Olduvai contained a disproportionately high incidence of extremities, which are low in food substance. He concluded other predators had taken
22451-446: The topic of Abbevillian came up, it was simply put down as a phase of Acheulean. Whatever was from Africa was Oldowan, and whatever from Europe, Acheulean. The solution to the definition problem is to define the types in terms of complexity. Simply struck tools are Oldowan. Retouched, or reworked tools are Acheulean. Retouching is a second working of the artifact. The manufacturer first creates an Oldowan tool. Then he reworks or retouches
22608-570: The trade of Liberia. This was a cause for concern among the British colonial authorities of Sierra Leone and the French colonial authorities of French Guinea and the Ivory Coast as tensions with Germany increased. Liberia remained neutral during World War I until August 4, 1917, when it declared war on Germany. Subsequently, it was one of 32 nations to take part in the Versailles Peace Conference in 1919, which ended
22765-661: The traditional name for the area near the Gulf of Guinea ; Mauritania lies in the Maghreb , the northwestern region of Africa that has historically been inhabited by West African groups such as the Fulani , Soninke , Wolof , Serer and Toucouleur people , along with Arab-Berber Maghrebi people such as the Tuareg ; Cape Verde is an island country in the Atlantic Ocean ; and Saint Helena, Ascension and Tristan da Cunha consists of eight main islands located in four different parts of
22922-489: The war and established the League of Nations ; Liberia was among the few African and non-Western nations to participate in the conference and the founding of the league. In 1927, the country's elections again showed the power of the True Whig Party, with electoral proceedings that have been called some of the most rigged ever; the winning candidate was declared to have received votes amounting to more than 15 times
23079-470: The western Maghreb) is composed of semi-arid terrain known as Sahel , a transitional zone between the Sahara and the West Sudanian savanna . Forests form a belt between the savannas and the southern coast, ranging from 160 km to 240 km in width. The northwest African region of Mauritania periodically suffers country-wide plagues of locusts which consume water, salt and crops on which
23236-545: The western Sahel, and increases more likely in the central to east Sahel, although opposite trends cannot yet be ruled out. These trends will affect the frequency and severity of floods, droughts, desertification , sand and dust storms, desert locust plagues and water shortages. However, irrespective of the changes in seasonal mean rain, the most intense storms are expected to become more intense, amplifying flood frequency. Enhanced carbon emissions and global warming may also lead to an increase in dry spells especially across
23393-517: Was a Yoruba empire of what is today Western, North Central Nigeria and Southern Republic of Benin . Established in the 14th century, the Oyo Empire grew to become one of the largest West African states. It rose through the outstanding organizational skills of the Yoruba, wealth gained from trade and its powerful cavalry . The Oyo Empire was the most politically important state in the region from
23550-456: Was because they faced racial discrimination in the form of political disenfranchisement and the denial of civil, religious, and social rights. Formed in 1816, the American Colonization Society (ACS) was made up mostly of Quakers and slaveholders. Quakers believed black people would face better chances for freedom in Africa than in the U.S. While slaveholders opposed freedom for enslaved people, some viewed "repatriation" of free people of color as
23707-441: Was left of the local wildlife, but by that time, it was too late. During the 1930s, the elephant population in the Gold Coast was about 300, and Sierra Leone between 500 and 600. Although a small number of elephants survived in Nigeria, hunting, agricultural expansion and clearing of forest in that country drastically affected its wildlife population, particularly elephants. Despite the historical damage that has been done to
23864-416: Was named "skillful" because it was considered the earliest tool-using human ancestor. Indeed, the genus Homo was in origin intended to separate tool-using species from their tool-less predecessors, hence the name of Australopithecus garhi , garhi meaning "surprise", a tool-using Australopithecine discovered in 1996 and described as the "missing link" between the genera Australopithecus and Homo . There
24021-549: Was preferable to having emancipated slaves remain in the United States. Similar state-based organizations established colonies in Mississippi-in-Africa , Kentucky in Africa , and the Republic of Maryland , which Liberia later annexed. Lincoln in 1862 described Liberia as only "in a certain sense...a success", and proposed instead that free people of color be assisted to emigrate to Chiriquí , today part of Panama. The Americo-Liberian settlers did not relate well to
24178-607: Was present in Europe, as shown by the discovery of fossil remains and Oldowan tools in Dmanisi , Georgia. Remains of their activities have also been excavated in Spain at sites in the Guadix-Baza basin and near Atapuerca . Most early European sites yield "Mode 1" or Oldowan assemblages. The earliest Acheulean sites in Europe only appear around 0.5 Ma. In addition, the Acheulean tradition does not seem to spread to Eastern Asia. It
24335-399: Was reached in 1995, leading to Taylor's election as president in 1997 . Under Taylor's leadership, Liberia became a pariah state due to its use of blood diamonds and illegal timber exports to fund the Revolutionary United Front in the Sierra Leone Civil War . The Second Liberian Civil War began in 1999 when Liberians United for Reconciliation and Democracy , a rebel group based in
24492-447: Was the first African republic to proclaim its independence and is Africa's first and oldest modern republic. Along with Ethiopia , it was one of the two African countries to maintain its sovereignty and independence during the European colonial " Scramble for Africa ". During World War II , Liberia supported the U.S. war effort against Nazi Germany and in turn received considerable American investment in infrastructure, which aided
24649-402: Was then succeeded by the Ghana Empire that first flourished roughly between the 2nd and 12th centuries C.E., which later gave way to the Mali Empire . In current-day Mauritania, there exist archaeological sites in the towns of Tichit and Oualata that were initially constructed around 2000 B.C., and were found to have originated from the Soninke branch of the Mandé peoples . Also, based on
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