The Olduvai Gorge or Oldupai Gorge in Tanzania is one of the most important paleoanthropological localities in the world; the many sites exposed by the gorge have proven invaluable in furthering understanding of early human evolution . A steep-sided ravine in the Great Rift Valley that stretches across East Africa , it is about 48 km long, and is located in the eastern Serengeti Plains within the Ngorongoro Conservation Area in the Olbalbal ward located in Ngorongoro District of Arusha Region , about 45 kilometres (28 miles) from Laetoli , another important archaeological locality of early human occupation. The British/Kenyan paleoanthropologist-archeologist team of Mary and Louis Leakey established excavation and research programs at Olduvai Gorge that achieved great advances in human knowledge. The site is registered as one of the National Historic Sites of Tanzania .
71-558: [REDACTED] Look up olduvai in Wiktionary, the free dictionary. Olduvai may refer to: Olduvai Gorge Seven Views of Olduvai Gorge Olduvai Gorge Museum Olduvai Hominid 8 Olduvai theory DUF1220 , aka Olduvai domain ; a protein domain Olduvai, Research Facility on Mars in the film Doom See also [ edit ] Oldowan Topics referred to by
142-558: A chert nodule quarry containing over 14,000 pieces, including gneiss and lava anvils and hammerstones . Hand axes were found at the EF-HR (Evelyn Fuchs-Hans Reck) and TK (Thiongo Korongo) sites. The BK (Bell's Korongo) site contained an Australopithecus boisei deciduous molar and canine . The distinctly red Bed III consists of 6–10 m of clays, sandstones and conglomerates signifying variable lake depths. Few fossils are present and only isolated stone tools, indicating
213-454: A welded tuff , the Naabi ignimbrite , forming the base. This is overlain by a series of lava flows from Olmoti and from another source to the south. The oldest fossils are found on this surface, dated at 1.89 mya , while stone tools have been dated at 1.7 mya through the first use of K-Ar dating by Garniss Curtis . In addition, fission track dating and paleomagnetism were used to date
284-494: A British force, which was more than eight times larger. Lettow-Vorbeck's guerrilla warfare compelled Britain to commit significant resources to a minor colonial theatre throughout the war and inflicted more than 10,000 casualties. Eventually, the weight of numbers, especially after forces coming from the Belgian Congo had attacked from the west ( Battle of Tabora ), and dwindling supplies forced Lettow-Vorbeck to abandon
355-523: A centralised area is evidence of developing social interaction and communal activity. All these factors indicate an increase in cognitive capacities at the beginning of the period of hominids transitioning to homininina—that is, to human clade . Homo habilis , probably the first early human species, occupied Olduvai Gorge approximately 1.9 million years ago (mya); then came a contemporary australopithecine , Paranthropus boisei , 1.8 mya, followed by Homo erectus , 1.2 mya. Homo sapiens , which
426-421: A famine to crush the resistance. It may have cost as many 300,000 lives. Scandal followed with allegations of corruption and brutality. In 1907, Chancellor Bernhard von Bülow appointed Bernhard Dernburg to reform the colonial administration. German colonial administrators relied heavily on native chiefs to keep order and collect taxes. By 1 January 1914, not including local police, the military garrisons of
497-449: A foundation for assessing local, regional, and continental changes in stone tool-making during the early Pleistocene, and aids in assessing which hominins were responsible for the several changes in stone tool technology over time. It is not known for sure which hominin species was first to create Oldowan tools. The emergence of tool culture has also been associated with the pre- Homo species Australopithecus garhi , and its flourishing
568-651: A large African workforce, but employment conditions were often poor, not to say life-threatening. Local German officials frequently colluded with European landowners in forcing Africans to work on the plantations, although the government in Berlin had banned any form of forced labour. The various labour ordinances promulgated in Dar es Salaam were largely ignored in the interior. The social and economic impacts of large-scale labour migration on "labour reservoirs" such as Unyamwezi and Usukuma were often devastating. Beginning in 1888
639-574: A large pedestal with an informative plaque mounted on the side of the pedestal. The fossil skulls depicted are Paranthropus boisei and Homo habilis , two contemporary species which were first discovered at Olduvai Gorge. The large-scale models created by Kijo are each 6 feet tall and weigh 5,000 pounds. The monument project was funded by the Stone Age Institute and the John Templeton Foundation , in partnership with
710-427: A larger brain capacity than that of Australopithecus boisei . These important differences indicated a different species, which eventually was named Homo habilis . Its larger brain capacity and decreased teeth size pointed to Homo as the probable toolmaker. The oldest tools at Olduvai, found at the lowest layer and classified as Oldowan, consist of pebbles chipped on one edge. Above this layer, and later in time, are
781-502: A makeshift British and Belgian flotilla and the Reichsheer garrison at Bismarckburg (modern-day Kasanga ). The Supreme Council of the 1919 Paris Peace Conference awarded all of German East Africa (GEA) to Britain on 7 May 1919, over the strenuous objections of Belgium. The British colonial secretary , Alfred Milner , and Belgium's minister plenipotentiary to the conference, Pierre Orts [ fr ] , then negotiated
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#1732773240154852-619: A reference, and/or with a substantial contribution to the development of geological sciences through history.' German East Africa German East Africa ( GEA ; German : Deutsch-Ostafrika ) was a German colony in the African Great Lakes region, which included present-day Burundi , Rwanda , the Tanzania mainland, and the Kionga Triangle , a small region later incorporated into Mozambique . GEA's area
923-459: A sparse early man presence. Bed IV is a distinctly different unit from Bed II in the eastern portion of the gorge. There, it is 5–8 m thick and composed of clays, and stream deposited sandstones and conglomerates. Four distinct tool-bearing levels are evident, including 500 handaxes and cleavers at the HK (Hopwood's Korongo) site, while phonolite handaxes and an elephant bone handaxe were found at
994-482: A team to Olduvai in 1913. There, he found hominin remains which were later radiocarbon dated to 17,000 BP . Four more expeditions were planned, but World War I prevented their start. After the war, as Tanganyika came under British control, Louis Leakey visited Reck in Berlin and viewed the Olduvai fossils. Louis Leakey became convinced that Olduvai Gorge held stone tools, thinking the deposits were of similar age to
1065-467: A while, such as "Udjidji" for Ujiji and "Kilimandscharo" for Mount Kilimanjaro , "Kleinaruscha" for Arusha-Chini and "Neu-Moschi" for the city now known as Moshi . ( Kigoma was known for a time as "Rutschugi".) Many places were given African names or had their previous names reestablished: The Imperial High Commissioners ( German : Reichskommissar ) and Imperial Governors ( German : Kaiserlicher Gouverneur ) of German East Africa: In 1914,
1136-1221: Is associated with the early species Homo habilis and Homo ergaster . Beginning 1.7 million years ago, early Homo erectus apparently inherited Oldowan technology and refined it into the Acheulean industry. Oldowan tools occur in Beds I–IV at Olduvai Gorge. Bed I, dated 1.85 to 1.7 mya, contains Oldowan tools and fossils of Paranthropus boisei and Homo habilis , as does Bed II, 1.7 to 1.2 mya. H. habilis gave way to Homo erectus at about 1.6 mya, but P. boisei persisted. Oldowan tools continue to Bed IV at 800,000 to 600,000 before present ( BP ). A significant change took place between Beds I and II at about 1.5 mya. Flake size increased, bifacial edges (as opposed to single-face edges) occurred more frequently and their length increased, and signs of battering on other artifacts increased. Some likely implications of these factors, among others, are that after this pivotal time hominins used tools more frequently, became better at making tools, and transported tools more often. Though substantial evidence of hunting and scavenging has been discovered at Olduvai Gorge, it
1207-424: Is believed by archaeologists that hominins inhabiting the area between 1.9 and 1.7 million years ago spent the majority of their time gathering wild plant foods, such as berries , tubers and roots . The earliest hominins most likely did not rely on meat for the bulk of their nutrition . Speculation about the amount of meat in their diets is inferred from comparative studies with a close relative of early hominins:
1278-516: Is different from Wikidata All article disambiguation pages All disambiguation pages Olduvai Gorge The gorge takes its name from the Maasai word oldupai which means "the place of the wild sisal" as the East African wild sisal ( Sansevieria ehrenbergii ) grows abundantly throughout the gorge area. Twenty-five kilometers downstream of Lake Ndutu and Lake Masek, the gorge
1349-498: Is estimated to have emerged roughly 300,000 years ago, is thought to have occupied sites in the gorge 17,000 years ago. While travelling in German East Africa in 1911 to investigate sleeping sickness , German physician and archaeologist Wilhelm Kattwinkel visited Olduvai Gorge, where he observed many fossil bones of an extinct three-toed horse. Inspired by Kattwinkel's discovery, German geologist Hans Reck led
1420-498: Is still debated today, but archaeologist Pat Shipman provided evidence that scavenging was probably the more common practice; she published that the majority of carnivore teeth marks came before the cut marks. Another finding by Shipman at FLK-Zinj is that many of the wildebeest bones found there are over-represented by adult and male bones; and this may indicate that hominins were systematically hunting these animals as well as scavenging them. The question of whether hunting or scavenging
1491-409: Is the result of up to 90 meters erosion cutting into the sediments of a Pleistocene lake bed . A side gorge, originating from Lemagrut Mountain, joins the main gorge 8 km from the mouth. This side gorge follows the shoreline of a prehistoric lake , rich in fossils and early hominin sites. Periodic flows of volcanic ash from Olmoti and Kerimasi helped to ensure preservation of the fossils in
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#17327732401541562-581: The Schutztruppen (protective troops) in Dar es Salaam, Moshi , Iringa , and Mahenge numbered 110 German officers (including 42 medical officers), 126 non-commissioned officers, and 2,472 Askari (native enlisted men). Germans promoted commerce and economic growth. Over 100,000 acres (40,000 ha) were put under sisal cultivation which was the largest cash crop. Two million coffee trees were planted, rubber trees grew on 200,000 acres (81,000 ha), and there were large cotton plantations. In
1633-542: The International Union of Geological Sciences (IUGS) included the 'Palaeoanthropological Sites of Human Evolution of Laetoli – Olduvai Gorge' in its assemblage of 100 'geological heritage sites' around the world in a listing published in October 2022. The organisation defines an IUGS Geological Heritage Site as 'a key place with geological elements and/or processes of international scientific relevance, used as
1704-598: The Kariandusi prehistoric site in Kenya. Reck and the paleontologist Donald McInnes accompanied Louis Leakey in his 1931 expedition, where Louis found a number of hand axes close to camp soon after their arrival. Mary Leakey first visited the area in 1935, joining Louis and Percy Edward Kent . Subsequent visits were made by the Leakeys in 1941, 1953, 1955 and 1957. Louis and Mary Leakey are responsible for most of
1775-702: The Usambara Railway was built from Tanga to Moshi to bring these agricultural products to market. The Central Railroad covered 775 mi (1,247 km) and linked Dar es Salaam, Morogoro , Tabora , and Kigoma . The final link to the eastern shore of Lake Tanganyika was completed in July 1914 and was cause for a huge and festive celebration in the capital with an agricultural fair and trade exhibition. Harbor facilities were built or improved with electrical cranes, with rail access and warehouses. Wharves were remodeled at Tanga, Bagamoyo, and Lindi . After 1891,
1846-599: The excavations and discoveries of the hominin fossils in Olduvai Gorge. In July 1959, at the FLK site (the initials of the person who discovered it Frida Leakey , and K for korongo , the Swahili language word for gully ), Mary Leakey found the skull of Zinjanthropus or Australopithecus boisei . In addition to an abundance of faunal remains the Leakeys found stone tools Mary classified as Oldowan . In May 1960, at
1917-737: The Anglo-Belgian agreement of 30 May 1919 where Britain ceded the north-western GEA districts of Ruanda and Urundi to Belgium. The conference's Commission on Mandates ratified this agreement on 16 July 1919. The Supreme Council accepted the agreement on 7 August 1919. On 12 July 1919, the Commission on Mandates agreed that the small Kionga Triangle south of the Rovuma River would be given to Portugal ; it eventually became part of independent Mozambique . The commission reasoned that Germany had virtually forced Portugal to cede
1988-583: The Developed Oldowan as the subsequent diverse tool-kit found in Beds II, III, and IV, with small tools made mostly from chert rather than quartzite. These tools are mostly spheroids and sub-spheroids, followed by choppers. Besides the chert quarry in Bed II, the Leakeys were able to identify the other source locations of the principal rocks used to make the stone tools. The most common material
2059-481: The FLK North-North site, the Leakeys' son Jonathan found the mandible that proved to be the type specimen for Homo habilis . While Hans Reck was the first geologist to attempt to understand the geology of the gorge, current understanding of the geology of the stratigraphic sequence of Olduvai Gorge was made possible in large part by the efforts of geologist Richard Hay . Hay spent twelve years studying
2130-482: The FLK and FLK North-North sites mentioned above, plus DK and FLK North. The DK site (Donald McInnes' first initial plus k for korongo ) has what Leakey considers to be a stone circle, and also many tools and fossil bones ranging in age from 1.75 mya to 1.9 mya. Bed II consists of 21–35 m of clay and sandstone Olduvai Lake and stream deposits. Manuports are abundant at the MNK (Mark Nicol Korongo) site in addition to
2201-629: The German Empire, there were more than 7.5 million locals. About 30% were Muslim and the remainder belonged to various tribal beliefs or Christian converts, compared to around 10,000 Europeans, who resided mainly in coastal locations and official residences. In 1913, only 882 German farmers and planters lived in the colony. Approximately 70,000 Africans worked on the plantations of GEA. General Paul von Lettow-Vorbeck had served in German South West Africa and Kamerun . He led
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2272-463: The German colonial administration undertook efforts to overhaul the region's caravan routes, which had existed before European colonisation, into all-weather highways, although most of these projects proved to be unsuccessful and ended in failure. In 1912, Dar es Salaam and Tanga received 356 freighters and passenger steamers and over 1,000 coastal ships and local trading-vessels. Dar es Salaam became
2343-564: The German forces in GEA during World War I. His military force consisted of 3,500 Europeans and 12,000 native Askaris and porters. The war strategy was to harry the British army of 40,000, which was at times commanded by the former Second Boer War commander Jan Smuts . One of Lettow-Vorbeck's greatest victories was at the Battle of Tanga (3–5 November 1914). In the battle, the German forces defeated
2414-524: The Germans did not act to prevent them. In 1914 the Germans contemplated to ban slavery, but ultimately did not, since they did not consider it financially possible to compensate their owners. Germany developed an educational program for Africans that included elementary, secondary, and vocational schools. "Instructor qualifications, curricula, textbooks, teaching materials, all met standards unmatched anywhere in tropical Africa." In 1924, ten years after
2485-538: The HEB (Heberer's Gully) site. The WK (Wayland's Korongo) site contained a Homo erectus pelvis and femur. The Masek Beds are composed of two episodes of aeolian ash from Kerimasi. A number of quartzite handaxes were found in this layer at the FLK site. Dunes formed after the deposition of Oldonyo Lengai tuffs make up the upper portion of the Ndutu Beds, but yield few fossils. Oldonyo Lengai tuffs also make up
2556-535: The Naisiusiu Beds. The few Australopithecus boisei remains, which include the skull, a thigh bone fragment, and several teeth, were found distributed throughout Beds I and II, which dates them in the range 1.1 to 2 mya. The more common remains of Homo habilis were found in Bed I and the lower portion of Bed II, which makes them contemporaries of Australopithecus boisei . Homo erectus remains were found in
2627-606: The Ngorongoro Conservation Area Authority (NCAA). The Olduvai Gorge Museum , located 5 km beyond the monument, is situated on the rim of the gorge at the junction of the main gorge and the side gorge. As one of the largest onsite museums in Africa, the museum provides educational exhibits related to the gorge and its long history. In respect of the presence of 'palaeoanthropological sites indicating early hominin development and activities',
2698-564: The Sultan's palace. The Sultan was forced to accept the German claims on the mainland outside a 10-mile-strip along the coast. In November 1886 Germany and Britain reached an agreement declaring they would respect the sovereignty of the Sultan of Zanzibar over his islands and the 10-mile-strip along the coast. They otherwise agreed on their spheres of interest along what is now the Tanzanian–Kenyan border. The British and Germans agreed to divide
2769-471: The beginning of the First World War and six years into British rule, the visiting American Phelps-Stokes Commission reported, "In regards to schools, the Germans have accomplished marvels. Some time must elapse before education attains the standard it had reached under the Germans." The Swahili word for school, shule , is derived from the German word Schule . In the most populous colony of
2840-400: The bones for marrow, using tools to strip the meat, or by carnivores having gnawed the bones. Since several kinds of marks are present together, some archaeologists including Lewis Binford think that hominins scavenged the meat or marrow left over from carnivore kills. Others like Henry Bunn believe the hominins hunted and killed these animals, and carnivores later chewed the bones. This issue
2911-421: The colony. He withdrew south into Portuguese Mozambique and then into Northern Rhodesia , where he agreed to a ceasefire after he had received news of the armistice between the warring nations three days earlier. Currency had to be printed locally due to a significant lack of provisions resulting from the naval blockade. After the war, Lettow-Vorbeck was acclaimed as one of Germany's heroes. His Schutztruppe
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2982-587: The deposits, while amino acid dating and Carbon-14 dating were used to date the bones. Hominid fossils and stone tools are found continuously throughout the entire exposed sequence in the gorge. Faulting between 100 and 30 kya, formed the Olbalbal Depression northwest of Ngorongoro. The 20–46 m thick Lower Pleistocene Bed I sediments overlying the Naabi ignimbrite consist of layers of Olmoti tuff and lake sediment claystone . Four well-preserved living sites of note are located within Bed I,
3053-426: The early years of the colony, hunting and gathering remained the basis of the export economy, and ivory and wild rubber were major exports. The African-owned plantations along the coast, on the other hand, suffered from the gradual abolition of slavery. The number of European-owned plantations rose steadily, but many of them proved unprofitable. Global markets for commodities like coffee and rubber were very unstable, and
3124-426: The economic development of the colony, Rainer Tetzlaff came to the conclusion that "German East Africa never achieved any real significance for the German Empire, neither as a colony for the settlement of emigrants, nor as a supplier of raw materials, nor as a market for exports." One of the great impediments to the development of plantation agriculture was the labour problem. The plantations could not function without
3195-645: The first gold mines in the colony, the Sekenke Gold Mine , which began operation in 1909 after the finding of gold there in 1907. In German Tanganyika slavery was gradually phased out. New enslavement and commercial slave trade was banned in 1901, but private slave sales were not banned, and thousands of slaves, mostly women, were sold in 1911-1914; all slaves born after 1905 were born free; slaves who had been subjected to abuse were freed; slaves were permitted to ransom and buy their freedom, and thousand of slaves bought their freedom or left their enslavers when
3266-413: The geology at Olduvai, much of it working along with Mary Leakey, finally formulating a detailed picture of the geologic history of the area. Hay's seminal work The Geology of the Olduvai Gorge was published in 1976. Reck identified five main layers of deposition in the gorge, which were labelled Beds I through V, with Bed I being the oldest and lowest in the sequence. Hay and other geologists working at
3337-588: The gorge since Reck's time have utilized Reck's original Bed outline, adding clarity, detail, and corrections to achieve a more thorough understanding of gorge history. Reck's original Bed IV interval was later distinguished as consisting of Bed IV and the Masek Beds, while Bed V has been reclassified as the Ndutu Bed and the Naisiuiu Bed. The stratigraphic sequence in the gorge is up to 90 m thick, with
3408-447: The gorge. The locality is significant in showing the increasing developmental and social complexities in the earliest Hominina , largely revealed in the production and use of stone tools . Prior to tools, evidence of scavenging and hunting can be noted—highlighted by the presence of gnaw marks that predate cut marks—and of the ratio of meat versus plant material in the early hominin diet. The collecting of tools and animal remains in
3479-561: The idea of erecting a monument to commemorate this significant site while also serving as a signpost and attracting visitors to the Olduvai Gorge and museum; paleoanthropologists Nicholas Toth , Kathy Schick , and Jackson Njau planned and provided life-size fossil casts at the request of the Tanzanian government, which were used by the celebrated Tanzanian artist Festo Kijo to create the two large concrete skulls. The monument consists of two large-scale models of fossil skulls which sit atop
3550-477: The information about early hominins comes from tools and debris piles of lithic flakes from such sites as FLK-Zinjanthropus in Olduvai Gorge. Early hominins selected specific types of rocks that would break in a predictable manner when "worked", and carried these rocks from deposits several kilometres away. Archaeologists such as Fiona Marshall fitted rock fragments back together like a puzzle. She states in her article "Life in Olduvai Gorge" that early hominins, "knew
3621-696: The mainland between themselves, and the Sultan had no option but to agree. German rule was established quickly over Bagamoyo , Dar es Salaam , and Kilwa . Oscar Baumann was sent to explore Masailand and Urundi. During his expedition he discovered the source of the Kagera river, the Alexandra Nile. The caravans of Tom von Prince , Wilhelm Langheld, Emin Pasha , and Charles Stokes were sent to dominate "the Street of Caravans". The Abushiri Revolt of 1888
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#17327732401543692-539: The modern chimpanzee . The chimpanzee's diet in the wild consists of only about five percent as meat. And the diets of modern hunter-gatherers do not include a large amount of meat. That is, most of the calories in both groups' diets came from plant sources. Thus, it can be assumed that early hominins had similar diet proportions, (see the middle-range theory or bridging arguments—bridging arguments are used by archaeologists to explain past behaviors, and they include an underlying assumption of uniformitarianism .) Much of
3763-512: The production of new "recruits", regulating the existing business of slavery. The colony began when Carl Peters , an adventurer and the founder of the Society for German Colonization , signed treaties with several native chieftains on the mainland which is opposite Zanzibar . On 3 March 1885, the German government announced that it had granted an imperial charter, which was signed by Chancellor Otto von Bismarck on 27 February 1885. The charter
3834-527: The right angle to hit the cobble, or core, in order to successfully produce sharp-edged flakes ...". She noted that selected flakes then were used to cut meat from animal carcasses, and shaped cobbles (called choppers) were used to extract marrow and to chop tough plant material. Bone fragments of birds, fish, amphibians , and large mammals were found at the FLK-Zinj site, many of which were scarred with marks. These likely were made by hominins breaking open
3905-411: The same term [REDACTED] This disambiguation page lists articles associated with the title Olduvai . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Olduvai&oldid=1251431694 " Category : Disambiguation pages Hidden categories: Short description
3976-463: The showcase city of all of tropical Africa. By 1914, Dar es Salaam and the surrounding province had a population of 166,000, among them 1,000 (0.6%) Germans. In all of the GEA, there were 3,579 Germans. Gold mining in Tanzania in modern times dates back to the German colonial period, beginning with gold discoveries near Lake Victoria in 1894. The Kironda-Goldminen-Gesellschaft established one of
4047-435: The soil and climate were not always favourable to the grower. It was only in sisal that the large plantations finally found a reliable source of income. Under the governorship of Albrecht von Rechenberg , from 1906 to 1912, the colonial administration began to place more emphasis on the economic potential of African small-holder agriculture, for which railway construction was an essential precondition. In his detailed study of
4118-405: The species engaged in heavy chewing, indicating a diet of tough plant material, including tubers , nuts , and seeds —and possibly large quantities of grasses and sedges . Conversely, the Leakeys' 1960s finds presented different characteristics. The skull lacked a sagittal crest and the braincase was much more rounded, suggesting it was not australopithecine. The larger braincase suggested
4189-508: The survey of the remaining 300 miles from Kilimanjaro to Lake Victoria. Between 1891 and 1894, the Hehe people which were led by Chief Mkwawa resisted German expansion. They were defeated because rival tribes supported the Germans. After years of guerrilla warfare, Mkwawa was cornered and committed suicide in 1898. The Maji Maji Rebellion occurred in 1905 and was put down by Governor Gustav Adolf von Götzen , who ordered measures to create
4260-546: The territory was divided amongst Britain, Belgium and Portugal, and was reorganised as a mandate of the League of Nations . Like other colonial powers, the Germans expanded their empire in the Africa Great Lakes region, ostensibly to explore the region's rich resources and its people. Unlike other imperial powers, however they never formally abolished either slavery or the slave trade and preferred instead to curtail
4331-468: The triangle in 1894. The Treaty of Versailles was signed on 28 June 1919, although the treaty did not take effect until 10 January 1920. On that date, the GEA was transferred officially to Britain, Belgium, and Portugal. Also on the same day, " Tanganyika " became the name of the British territory. Some names in German East Africa continued to bear German spellings of the local names for
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#17327732401544402-762: The true hand-axe industries, the Chellean and the Acheulean . Higher still (and later still) are located Levallois artifacts, and finally the Stillbay implements. Oldowan tools in general are called "pebble tools" because the blanks chosen by the stone knapper already resembled, in pebble form, the final product. Mary Leakey classified the Oldowan tools according to usage; she developed Oldowan A, B, and C categories, linking them to Modes 1, 2, and 3 assemblages classified according to mode of manufacture. Her work remains
4473-420: The upper portions of Bed II, making them contemporaries of Australopithecus boisei , but not of Homo habilis . Louis Leakey first described the Oldowan stone tool industry in 1951. The Leakeys determined that choppers were the most common stone tool found at the gorge, amounting to over half of the total number, and identified 11 Oldowan sites in the gorge, 9 in Bed I, and 2 in Bed II. They also identified
4544-541: Was 994,996 km (384,170 sq mi), which was nearly three times the area of present-day Germany and almost double the area of metropolitan Germany at the time. The colony was organised when the German military was asked in the late 1880s to put down a revolt against the activities of the German East Africa Company . It ended with Imperial Germany 's defeat in World War I . Ultimately
4615-556: Was celebrated as the only colonial German force during World War I that was not defeated in open combat, but it often retreated when it was outnumbered. The Askari colonial troops who had fought in the East African campaign were later given pension payments by the Weimar Republic and West Germany . The SMS Königsberg , a German light cruiser , also fought off the coast of the African Great Lakes region. She
4686-495: Was eventually scuttled in the Rufiji delta in July 1915 after running low on coal and spare parts and was subsequently blockaded and bombarded by the British. The surviving crew stripped out the remaining ship's guns, mounted them on gun carriages, and joined the land forces, which added considerably to their effectiveness. Another smaller campaign was conducted on the shores of southern Lake Tanganyika in 1914 and 1915. It involved
4757-509: Was granted to Peters' company and was intended to establish a protectorate in the African Great Lakes region. Peters then recruited specialists who began exploring south to the Rufiji River and north to Witu , near Lamu on the coast. The Sultan of Zanzibar protested and claimed that he was the ruler of both Zanzibar and the mainland. Chancellor Bismarck sent five warships which arrived on 7 August 1885, training their guns on
4828-592: Was more important at Olduvai Gorge is still a controversial one. Direct evidence of hominins scavenging remains from a big cat in the form of antelope bones that were gnawed on by a felid and then processed by hominins has been found at David's Site from Olduvai Bed 1. In July 2019, the Olduvai Gorge Monument was erected at the turnoff to Olduvai Gorge from the road which connects Ngorongoro Conservation Area and Serengeti National Park (a route traveled by safari-goers). Eng. Joshua Mwankunda conceived
4899-555: Was put down with British help the following year. In 1890, London and Berlin concluded the Heligoland–Zanzibar Treaty , which gave Heligoland to Germany and decided the border between GEA and the East Africa Protectorate controlled by Britain, although the exact boundaries remained unsurveyed until 1910. The stretch of border between Kenya and Tanganyika , running from the sea to Lake Victoria,
4970-646: Was quartzite, which originated from the Naibor Soit Inselberg just north of the gorges. The phonolite originated from the Engelosen volcano 5 km to the north. The gneiss came from the Kelogi inselborg 9 km to the southwest. The first species found by the Leakeys, Zinjanthropus boisei or Australopithecus boisei (renamed and still debated as Paranthropus boisei ), featured a sagittal crest and large molars . These attributes suggested
5041-658: Was surveyed by two British brothers: Charles Stewart Smith (British Consul at Mombasa) and his younger brother George Edward Smith (an officer and later a general with the Royal Engineers). Stewart Smith had been appointed British Commissioner in 1892 for the delimitation of the Anglo-German Boundary in Africa , and in the same year they both surveyed the 180-mile line from the sea to Mount Kilimanjaro. Twelve years later George Edward Smith returned to complete
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