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156-723: PSI drew criticism for its lack of attention of underlying regional economic problems and local political struggles, the conduct of partner governments against those suspected of being "terrorists", and for indirectly radicalizing certain groups living in or near the Sahara .- "According to State Department officials, the Pan- Sahel region of Africa has become important in the global security arena. Vast expanses of unpopulated areas, instability, porous borders and corruption make Africa an inviting playground for terrorists." Voice of America 's Alex Belida reported on November 14, 2003, that

312-468: A Homo erectus jaw was found, dating from 100,000 BCE. On Devil's Island , tools dating back 6,000 years have been found, which were used to open shells. In the area at the bottom of Goubet (Dankalélo, not far from Devil's Island), circular stone structures and fragments of painted pottery have also been discovered. Previous investigators have also reported a fragmentary maxilla, attributed to an older form of Homo sapiens and dated to c. 250 Ka, from

468-800: A North African link, investigators say, and may presage others in Europe." "Having learned from missteps in Afghanistan and Iraq ," he says, "the American officers are pursuing this battle with a new approach. Instead of planning on a heavy American military presence, they are dispatching Special Operations forces to countries like Mali and Mauritania in West Africa to train soldiers and outfit them with pickup trucks, radios and global-positioning equipment." Drew Brown, in his May 12, 2004, Knight Ridder article adds that "Marine Corps Gen. James Jones ,

624-552: A Solomonic army and killed the Emperor. He then advanced to the mountains of Mokha, where he encountered a 30,000 strong Solomonic army. The Adalite soldiers surrounded their enemies and for two months besieged the trapped Solomonic soldiers until a truce was declared in Mansur's favour. During this period, Adal emerged as a centre of Muslim resistance against the expanding Christian Abyssinian kingdom. Adal would thereafter govern all of

780-539: A T-shaped symbol. Additionally, archaeological excavations at Tiya have yielded tombs. As of 1997, 118 stelae were reported in the area. Along with the stelae in the Hadiya Zone , the structures are identified by local residents as Yegragn Dingay or "Gran's stone", in reference to Imam Ahmad ibn Ibrahim al-Ghazi (Ahmad "Gurey" or "Gran"), ruler of the Adal Sultanate . Imam Ahmad ibn Ibrahim al-Ghazi

936-617: A base in Djibouti . "No U.S. forces have been committed to combat in Africa, Jones said. Involvement has consisted primarily of training and advisory teams." In 2009, a NYTimes article reviewed the PSI, particularly as it played out in and now underlies current policy scenarios in Mauritania. Sahara The Sahara ( / s ə ˈ h ɑːr ə / , / s ə ˈ h ær ə / ) is

1092-531: A bed of flowers. The three are assumed to have died within 24 hours of each other, but as their skeletons hold no apparent trauma (they did not die violently) and they have been buried so elaborately – unlikely if they had died of a plague – the cause of their deaths is a mystery. Djibouti Djibouti , officially the Republic of Djibouti , is a country in the Horn of Africa , bordered by Somalia to

1248-426: A consequence, the weather tends to be sunny, dry and stable with a minimal chance of rainfall. Subsiding, diverging, dry air masses associated with subtropical high-pressure systems are extremely unfavorable for the development of convectional showers. The subtropical ridge is the predominant factor that explains the hot desert climate ( Köppen climate classification BWh ) of this vast region. The descending airflow

1404-561: A customs house and galleys patrolling the Bab-el-Mandeb . By the 17th century, when the Ottomans were compelled to retire from Zeyla, the town and its environs such as Tadjoura fell under the control of the rulers of Mocha and Sana'a , who had leased the territory to a Sana'a merchant called Sayyid Al-Barr. Zeyla was subsequently ruled by an Emir, whom Mordechai Abir suggested had "some vague claim to authority over all of

1560-524: A desert spanning across North Africa . With an area of 9,200,000 square kilometres (3,600,000 sq mi), it is the largest hot desert in the world and the third-largest desert overall, smaller only than the deserts of Antarctica and the northern Arctic . The name "Sahara" is derived from Arabic : صَحَارَى , romanized :  ṣaḥārā /sˤaħaːraː/ , a broken plural form of ṣaḥrā' ( صَحْرَاء /sˤaħraːʔ/ ), meaning "desert". The desert covers much of North Africa , excluding

1716-554: A giraffe are also found at Dorra and Balho . Handoga , dated to the fourth millennium BCE, has in turn yielded obsidian microliths and plain ceramics used by early nomadic pastoralists with domesticated cattle. The site of Wakrita is a small Neolithic establishment located on a wadi in the tectonic depression of Gobaad in Djibouti in the Horn of Africa . The 2005 excavations yielded abundant ceramics that enabled us to define one Neolithic cultural facies of this region , which

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1872-519: A healthy adult. The Saharan silver ant is unique in that due to the extreme high temperatures of their habitat, and the threat of predators, the ants are active outside their nest for only about ten minutes per day. Dromedary camels and goats are the domesticated animals most commonly found in the Sahara. Because of its qualities of endurance and speed, the dromedary is the favourite animal used by nomads . Human activities are more likely to affect

2028-775: A language of the Cushitic branch of the Afroasiatic languages . Djibouti is near some of the world's busiest shipping lanes, controlling access to the Red Sea and Indian Ocean . It serves as a key refuelling and transshipment center and the principal maritime port for imports from and exports to neighboring Ethiopia . A burgeoning commercial hub, the nation is the site of various foreign military bases. The Intergovernmental Authority on Development (IGAD) regional body also has its headquarters in Djibouti City. Djibouti

2184-579: A settlement at Sagallo in 1889 was promptly thwarted by French forces after just one month. In 1894, Léonce Lagarde established a permanent French administration in the city of Djibouti and named the region French Somaliland . The construction of the Imperial Ethiopian Railway west into Ethiopia turned the port of Djibouti into a boomtown of 15,000 at a time when Harar was the only city in Ethiopia to exceed that. Although

2340-582: A succession of battles with neighbouring Abyssinia . At its height, the Adal kingdom controlled large parts of modern-day Djibouti, Somaliland , Eritrea and Ethiopia. Between Djibouti City and Loyada are a number of anthropomorphic and phallic stelae . The structures are associated with graves of rectangular shape flanked by vertical slabs, as also found in Tiya , central Ethiopia . The Djibouti-Loyada stelae are of uncertain age, and some of them are adorned with

2496-569: A summer rainy season that extends across Africa from east to west. The southern limit of the Sahara is indicated botanically by the southern limit of Cornulaca monacantha (a drought-tolerant member of the Chenopodiaceae ), or northern limit of Cenchrus biflorus , a grass typical of the Sahel. According to climatic criteria, the southern limit of the Sahara corresponds to the 150 mm (5.9 in) isohyet of annual precipitation (this

2652-542: A surface feature of Earth, with near-current technology. The Sahara is mainly rocky hamada (stone plateaus); ergs (sand seas – large areas covered with sand dunes ) form only a minor part, contrary to common misconception , but many of the sand dunes are over 180 metres (590 ft) high. Wind or rare rainfall shape the desert features: sand dunes, dune fields, sand seas, stone plateaus, gravel plains ( reg ), dry valleys ( wadi ), dry lakes ( oued ), and salt flats ( shatt or chott ). Unusual landforms include

2808-540: A united Somalia as had been proposed by Mahmoud Harbi , Vice President of the Government Council. Harbi was killed in a plane crash two years later under suspicious circumstances. In 1966, France rejected the United Nations ' recommendation that it should grant French Somaliland independence. In August of the same year, an official visit to the territory by then French President Charles de Gaulle ,

2964-702: A warning to the Mamluk ruler that if he did not stop the persecution of Christians in Egypt, he would retaliate against Muslims under his rule and would starve the peoples of Egypt by diverting the course of the Nile. According to Pankhurst, of the two threats, the diversion of Nile was an idle threat and the Egyptian sultan dismissed it because he likely realized this to be so. The fear that the Ethiopians might tamper with

3120-660: Is a long-term average, since precipitation varies annually). Important cities located in the Sahara include Nouakchott , the capital of Mauritania; Tamanrasset , Ouargla , Béchar , Hassi Messaoud , Ghardaïa , and El Oued in Algeria; Timbuktu in Mali; Agadez in Niger; Ghat in Libya; and Faya-Largeau in Chad. The Sahara is the world's largest hot desert . It is located in

3276-422: Is a north African gazelle that can also go for a long time without water. Other notable gazelles include the rhim gazelle and dama gazelle . The Saharan cheetah ( northwest African cheetah ) lives in Algeria, Togo , Niger, Mali, Benin , and Burkina Faso . There remain fewer than 250 mature cheetahs, which are very cautious, fleeing any human presence. The cheetah avoids the sun from April to October, seeking

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3432-629: Is a prehistoric industry, or domain, that existed between 10,000 and 8,000 years ago in the Sahara, during the Neolithic Subpluvial . Human remains from this culture were found in 2000 at a site known as Gobero , located in Niger in the Ténéré Desert . The site is known as the largest and earliest grave of Stone Age people in the Sahara. The Kiffians were skilled hunters . Bones of many large savannah animals that were discovered in

3588-465: Is associated with high rates of wind-blown mineral dust, and these dust levels are found as expected in marine cores from the north tropical Atlantic. But around 12,500 BCE the amount of dust in the cores in the Bølling / Allerød phase suddenly plummets and shows a period of much wetter conditions in the Sahara, indicating a Dansgaard-Oeschger (DO) event (a sudden warming followed by a slower cooling of

3744-403: Is estimated to include five hundred species of plants, which is extremely low considering the huge extent of the area. Plants such as acacia trees, palms, succulents, spiny shrubs, and grasses have adapted to the arid conditions, by growing lower to avoid water loss by strong winds, by storing water in their thick stems to use it in dry periods, by having long roots that travel horizontally to reach

3900-573: Is officially known as the Republic of Djibouti . In local languages it is known as Gabuuti (in Afar ) and Jabuuti (in Somali ). The country is named for its capital, the City of Djibouti . The etymology of the name is disputed. There are several theories and legends about its origin, varying based on ethnicity. One theory derives it from the Afar word gabouti , meaning "plate", possibly referring to

4056-667: Is the strongest and the most effective over the eastern part of the Great Desert, in the Libyan Desert: this is the sunniest, driest and the most nearly "rainless" place on the planet, rivaling the Atacama Desert , lying in Chile and Peru . The rainfall inhibition and the dissipation of cloud cover are most accentuated over the eastern section of the Sahara rather than the western. The prevailing air mass lying above

4212-422: Is very unreliable and erratic in the Sahara as it may vary considerably year by year. In full contrast to the negligible annual rainfall amounts, the annual rates of potential evaporation are extraordinarily high, roughly ranging from 2,500 millimetres (100 in) per year to more than 6,000 millimetres (240 in) per year in the whole desert. Nowhere else on Earth has air been found as dry and evaporative as in

4368-543: The Adrar of Mauritania and a value of 75 °C (167 °F) has been measured in Borkou , northern Chad. Due to lack of cloud cover and very low humidity, the desert usually has high diurnal temperature variations between days and nights. However, it is a myth that the nights are especially cold after extremely hot days in the Sahara. On average, nighttime temperatures tend to be 13–20 °C (23–36 °F) cooler than in

4524-488: The Algerian Desert called Bou Bernous , at an elevation of 378 metres (1,240 ft) above sea level, and only Death Valley, California rivals it. Other hot spots in Algeria such as Adrar , Timimoun , In Salah , Ouallene , Aoulef , Reggane with an elevation between 200 and 400 metres (660 and 1,310 ft) above sea level get slightly lower summer average highs, around 46 °C (114.8 °F) during

4680-659: The French Territory of the Afars and the Issas (French: Territoire français des Afars et des Issas ). The Bab-el-Mandeb region has often been considered a primary crossing point for early hominins following a southern coastal route from East Africa to South and Southeast Asia . The Djibouti area has been inhabited since the Neolithic . According to linguists, the first Afroasiatic -speaking populations arrived in

4836-765: The Late Pleistocene Iberomaurusians , early Holocene Capsians , and mid-Holocene Mechta groups, whereas the Tenerian crania are more like those of Mediterranean groups. Graves show that the Tenerians observed spiritual traditions, as they were buried with artifacts such as jewelry made of hippo tusks and clay pots. The most interesting find is a triple burial, dated to 5300 years ago, of an adult female and two children, estimated through their teeth as being five and eight years old, hugging each other. Pollen residue indicates they were buried on

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4992-762: The Niger River valley and the Sudan region of sub-Saharan Africa . The Sahara can be divided into several regions, including the western Sahara, the central Ahaggar Mountains , the Tibesti Mountains , the Aïr Mountains , the Ténéré desert, and the Libyan Desert . For several hundred thousand years, the Sahara has alternated between desert and savanna grassland in a 20,000-year cycle caused by

5148-635: The Richat Structure in Mauritania. Several deeply dissected mountains, many volcanic, rise from the desert, including the Aïr Mountains , Ahaggar Mountains , Saharan Atlas , Tibesti Mountains , Adrar des Iforas , and the Red Sea Hills . The highest peak in the Sahara is Emi Koussi , a shield volcano in the Tibesti range of northern Chad. The central Sahara is hyperarid , with sparse vegetation. The northern and southern reaches of

5304-520: The Sahil , but whose real authority did not extend very far beyond the walls of the town." Assisted by cannons and a few mercenaries armed with matchlocks , the governor succeeded in fending off incursions by both the disunited nomads of the interior, who had penetrated the area, as well as brigands in the Gulf of Aden. Although Tadjoura claimed complete independence, it was considered subordinate to Zeyla as

5460-460: The continent , was another factor that compelled observers to doubt that the French would attempt to hold on to the territory. A third independence referendum was held in the French Territory of the Afars and the Issas on 8 May 1977. The previous referendums were held in 1958 and 1967 , which rejected independence . This referendum backed independence from France . A landslide 98.8% of

5616-474: The horse latitudes under the subtropical ridge , a significant belt of semi-permanent subtropical warm-core high pressure where the air from the upper troposphere usually descends, warming and drying the lower troposphere and preventing cloud formation. The permanent absence of clouds allows unhindered light and thermal radiation. The stability of the atmosphere above the desert prevents any convective overturning, thus making rainfall virtually non-existent. As

5772-514: The precession of Earth's axis (about 26,000 years) as it rotates around the Sun, which changes the location of the North African monsoon . The Sahara covers large parts of Algeria , Chad , Egypt , Libya , Mali , Mauritania , Niger , Western Sahara and Sudan , and parts of southern Morocco and Tunisia . It covers 9 million square kilometres (3,500,000 sq mi), 31% of

5928-408: The "multimillion dollar security training and equipment program" was "at last under way" in Mali, "a year after it was announced." The program was to continue in the other three countries "over the next several months." Belida said that "Army Colonel John Schnibben , operations director at U.S. European Command , responsible for most of sub-Saharan Africa, says the effort could have a big pay-off for

6084-539: The 10th Special Forces Group began training military forces in Mali, Mauritania, Chad and Niger under the Pan-Sahel Initiative, a $ 7 million State Department program designed to help the security forces of those impoverished nations defend against terrorists. "That effort follows the establishment of Task Force Horn of Africa, where more than 1,200 Marines and special-operations soldiers are heading up anti-terror training and operations in eastern Africa from

6240-656: The 2,434 riflemen deployed, 517 were killed and 1,200 wounded in Europe. After the Italian invasion and occupation of Ethiopia in the mid-1930s, constant border skirmishes occurred between French forces in French Somaliland and Italian forces in Italian East Africa . In June 1940, during the early stages of World War II , France fell and the colony was then ruled by the pro- Axis Vichy (French) government . British and Commonwealth forces fought

6396-506: The Afars largely opting to remain associated with France. The referendum was again marred by reports of vote rigging on the part of the French authorities. Shortly after the plebiscite was held, the former Côte française des Somalis (French Somaliland) was renamed to Territoire français des Afars et des Issas . Announcement of the plebiscite results sparked civil unrest, including several deaths. France also increased its military force along

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6552-509: The African continent. If all areas with a mean annual precipitation of less than 250 mm (9.8 in) were included, the Sahara would be 11 million square kilometres (4,200,000 sq mi). It is one of three distinct physiographic provinces of the African massive physiographic division . The Sahara is so large and bright that, in theory, it could be detected from other stars as

6708-417: The African humid period. At its largest extent, sometime before 5000 BCE, Lake Mega-Chad was the largest of four Saharan paleolakes, and is estimated to have covered an area of 350,000 km . The Sahara pump theory describes this cycle. During periods of a wet or " Green Sahara ", the Sahara becomes a savanna grassland and various flora and fauna become more common. Following inter-pluvial arid periods,

6864-523: The Commander of the patrol sloop L'Inferent reported on the Egyptian occupation in the Gulf of Tadjoura. The Commander of the patrol sloop Le Vaudreuil reported that the Egyptians were occupying the interior between Obock and Tadjoura . Emperor Yohannes IV of Ethiopia signed an accord with Great Britain to cease fighting the Egyptians and to allow the evacuation of Egyptian forces from Ethiopia and

7020-579: The Egyptian garrison at Sagallo to retire to Zeila . The cruiser Seignelay reached Sagallo shortly after the Egyptians had departed. French troops occupied the fort despite protests from the British Agent in Aden , Major Frederick Mercer Hunter, who dispatched troops to safeguard British and Egyptian interests in Zeila and prevent further extension of French influence in that direction. On 14 April 1884

7176-855: The Emperor. According to Mordechai Abir, Sa'ad ad-Din II raids against the Ethiopian empire were largely hit-and-run type, which hardened the resolve of the Christian ruler to end the Muslim rule in their east. In the early 15th century, the Ethiopian Emperor who was likely Dawit I collected a large army to respond. He branded the Muslims of the surrounding area "enemies of the Lord", and invaded Ifat. After much war, Ifat's troops were defeated in 1403 on

7332-526: The Fleuriot de Langle to colonize the south of the Gulf of Tadjoura . On March 26, 1885, the French signed another treaty with the Issas where the latter would become a protectorate under the French. It was established between 1883 and 1887, after the ruling Somalis and Afar sultans each signed a treaty with the French . An attempt by Nikolay Ivanovitch Achinov , a Russian adventurer, to establish

7488-529: The French Ambassador to Somalia, Jean Guery, to be exchanged against two activists of FLCS members who were both serving life terms in mainland France . He was exchanged for the two FLCS members in Aden , South Yemen . The FLCS was recognized as a national liberation movement by the Organization of African Unity (OAU), which participated in its financing. The FLCS evolved its demands between

7644-421: The Gendarmerie Nationale Intervention Group over a bus hijacking en route to Loyada . This event, by showing the difficulties of maintaining the French colonial presence in Djibouti, was an important step in the independence of the territory . The likelihood of a third referendum appearing successful for the French had grown even dimmer. The prohibitive cost of maintaining the colony , France's last outpost on

7800-412: The Great Desert the hottest large region in the world, and the hottest place on Earth during summer in some spots. The average high temperature exceeds 38 to 40 °C (100.4 to 104.0 °F) during the hottest month nearly everywhere in the desert except at very high altitudes. The world's highest officially recorded average daily high temperature was 47 °C (116.6 °F) in a remote desert town in

7956-433: The Harar plateau, Sultan Sa'ad ad-Din subsequently fled to Zeila where Ethiopian soldiers pursued him. Al-Maqrizi narrates: the Amhara pursued Sa'd al-Din as far as the peninsula of Zeila , in the ocean, where he took refuge. The Amhara besieged him there, and deprived him of water; at last one of the impious showed them a way by which they could reach him. When they came upon him a battle ensued; and after three days

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8112-585: The Imam, each year at the time of the fairs, a perpetual annuity which the governor of Zeyla would be responsible for extracting. Tadjourah's vizier Mahammed Mahammed renewed it for the benefit of the Turkish pasha of Al-Hodeida although the Ottoman Empire never exercised political right over Tadjoura. Mohammed Al-Barr would later be succeeded as governor of Zeila and its dependencies( Sahil ) by Sharmake Ali Salih . Muhammad Ali , Pasha of Egypt , came to control Yemen , Harar , Gulf of Tadjoura with Zeila and Berbera included. The Governor Abou Baker ordered

8268-401: The Intertropical Convergence Zone from the south and the annual average rainfall ranges from 100 millimetres (4 in) to 250 millimetres (10 in). For example, Timbuktu, Mali and Agadez , Niger are found in this zone. The vast central hyper-arid core of the desert is virtually never affected by northerly or southerly atmospheric disturbances and permanently remains under the influence of

8424-413: The Kiffian culture do not exist after 8,000 years ago, as the Sahara went through a dry period for the next thousand years. After this time, the Tenerian culture colonized the area. Gobero was discovered in 2000 during an archaeological expedition led by Paul Sereno , which sought dinosaur remains. Two distinct prehistoric cultures were discovered at the site: the early Holocene Kiffian culture, and

8580-494: The Muslim territories in the Horn of Africa in much the same way as Emperor Yekuno Amlak was attempting to consolidate the Christian territories in the highlands during the same period. In 1320 a conflict between the Christian monarch and Muslim Ifat leaders began. The conflict was precipitated by Al-Nasir Muhammad of Egypt . The Mamluk ruler Al-Nasir Muhammad was persecuting Christian Copts and destroying Coptic churches. The Ethiopian Emperor Amda Seyon I sent an envoy with

8736-441: The Nile, states Pankhurst, was nevertheless to remain with Egyptians for many centuries. Sabr ad-Din's rebellion was not an attempt to achieve independence, but to become emperor of a Muslim Ethiopia. Amda Seyon's royal chronicle states that Sabr ad-Din proclaimed: In fact, after his first incursion, Sabr ad-Din appointed governors for nearby and neighboring provinces such as Fatagar and Alamalé, as well as far-off provinces in

8892-414: The Pan-Sahel Initiative "was begun with $ 7 million and focused on Mali , Mauritania , Niger and Chad . It is being expanded to include Senegal and possibly other countries. The U.S. European Command has asked for $ 125 million for the region over five years."The Pan-Sahel Initiative is the newest front in the "American campaign against terrorism ... in a region that military officials fear could become

9048-435: The Red Sea coast of Sudan, Djibouti is considered the most likely location of the territory known to the Ancient Egyptians as Punt (or Ta Netjeru , meaning "God's Land"). The first mention of the Land of Punt dates to the 25th century BC. The Puntites were a nation of people who had close relations with Ancient Egypt during the reign of the 5th dynasty Pharaoh Sahure and the 18th dynasty Queen Hatshepsut . According to

9204-417: The Red Sea in order to obtain bitumen , copper, carved amulets, naptha and other goods transported overland and down the Dead Sea to Elat at the head of the gulf of Aqaba where they were joined with frankincense and myrrh coming north both by sea and overland along trade routes through the mountains running north along the east coast of the Red Sea. Together with northern Ethiopia, Somaliland, Eritrea and

9360-399: The Sahara (birds in particular) such as African silverbill and black-faced firefinch , among others. There are also small desert crocodiles in Mauritania and the Ennedi Plateau of Chad. The deathstalker scorpion can be 10 cm (3.9 in) long. Its venom contains large amounts of agitoxin and scyllatoxin and is very dangerous; however, a sting from this scorpion rarely kills

9516-408: The Sahara area then reverts to desert conditions and the flora and fauna are forced to retreat northwards to the Atlas Mountains , southwards into West Africa , or eastwards into the Nile Valley . This separates populations of some of the species in areas with different climates , forcing them to adapt , possibly giving rise to allopatric speciation . It is also proposed that humans accelerated

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9672-400: The Sahara is strongly influenced by the North Atlantic Oscillation (NAO), with warmer winter temperatures during negative NAO events and cooler winters with more frosts when the NAO is positive. This is because the weaker clockwise flow around the eastern side of the subtropical anticyclone during negative NAO winters, although too dry to produce more than negligible precipitation, does reduce

9828-441: The Sahara is the continental tropical (cT) air mass, which is hot and dry. Hot, dry air masses primarily form over the North-African desert from the heating of the vast continental land area, and it affects the whole desert during most of the year. Because of this extreme heating process, a thermal low is usually noticed near the surface, and is the strongest and the most developed during the summertime. The Sahara High represents

9984-407: The Sahara region. However, at least two instances of snowfall have been recorded in Sahara, in February 1979 and December 2016, both in the town of Ain Sefra . One theory for the formation of the Sahara is that the monsoon in Northern Africa was weakened because of glaciation during the Quaternary period, starting two or three million years ago. Another theory is that the monsoon was weakened when

10140-398: The Somaliland littoral. The Egyptian garrison was withdrawn from Tadjoura . Léonce Lagarde deployed a patrol sloop to Tadjoura the following night. The boundaries of the present-day Djibouti state were established as the first French establishment in the Horn of Africa during the Scramble for Africa . The March 11, 1862, agreement the Afar sultan , Raieta Dini Ahmet, signed in Paris

10296-548: The Tassili n'Ajjer in southeast Algeria. Fossils of dinosaurs , including Afrovenator , Jobaria and Ouranosaurus , have also been found here. The modern Sahara, though, is not lush in vegetation, except in the Nile Valley, at a few oases , and in the northern highlands, where Mediterranean plants such as the olive tree are found to grow. Shifts in Earth's axis increased temperatures and decreased precipitation, which caused an abrupt beginning of North Africa desertification about 5,400 years ago. The Kiffian culture

10452-578: The United States and its Sahel partners." Belida reported that in October 2002, "AF DAS Robert Perry and S/CT Deputy Coordinator Stephanie Kinney , along with other State representatives, visited Chad, Niger, Mauritania and Mali, briefing host nations on the Pan-Sahel Initiative (PSI) ... a program designed to protect borders, track movement of people, combat terrorism , and enhance regional cooperation and stability." Beginning in November 2002, "technical assessments" took place in each country to "help focus training and other capacity building resources." PSI

10608-412: The amount of rainfall received – the Northern (Mediterranean), Central and Southern Zones. There are two transitional zones – the Mediterranean-Sahara transition and the Sahel transition zone. The Saharan flora comprises around 2800 species of vascular plants . Approximately a quarter of these are endemic . About half of these species are common to the flora of the Arabian deserts. The central Sahara

10764-422: The ancient Tethys Sea dried up during the Tortonian period around 7 million years ago. The climate of the Sahara has undergone enormous variations between wet and dry over the last few hundred thousand years, believed to be caused by long-term changes in the North African climate cycle that alters the path of the North African Monsoon – usually southward. The cycle is caused by a 41,000-year cycle in which

10920-478: The area's geographical features. Another connects it to gabood , meaning "upland/plateau". Djibouti could also mean "Land of Tehuti " or "Land of Thoth ( Egyptian : Djehuti / Djehuty )", after the Egyptian moon god. Under French administration, from 1862 until 1894, the land to the north of the Gulf of Tadjoura was called " Obock ". While 1897 to 1967 the area was known as French Somaliland (French: Côte française des Somalis ), and from 1967 to 1977 as

11076-421: The atmospheric circulation itself, the desert is made even drier by its geographical configuration and location. Indeed, the extreme aridity of the Sahara is not only explained by the subtropical high pressure: the Atlas Mountains of Algeria, Morocco and Tunisia also help to enhance the aridity of the northern part of the desert. These major mountain ranges act as a barrier, causing a strong rain shadow effect on

11232-714: The battalion's companies were awarded the Croix de Guerre, and the RICM flag received the Legion of Honor. Reorganized as a combat unit by December 1916, the battalion fought at Chemin des Dames in May 1917 and later in significant battles such as Malmaison, the 3rd Battle of the Aisne, and the 2nd Battle of the Marne, earning multiple citations and the right to wear the Croix de Guerre fourragère. Of

11388-572: The century. The earliest reference to Adal was following the collapse of the Makhzumi dynasty in July 1288 when 'Ali Baziyu led a campaign in Adal and Mora which was concluded by the killing of the lords of Adal and Mora , the victorious Sultan then annexed Adal and Mora to his Kingdom. Adal is also mentioned by Marco Polo in 1295 as a state continuously in conflict with Abyssinia. According to fourteenth century Arab historian Al Umari , Adal

11544-658: The city. A local battalion from French Somaliland participated in the Liberation of France in 1944. In 1958, on the eve of neighboring Somalia's independence in 1960, a referendum was held in Djibouti to decide whether to remain with France or to be an independent country. The referendum turned out in favour of a continued association with France, partly due to a combined yes vote by the sizable Afar ethnic group and resident French. There were also allegations of widespread vote rigging . The majority of those who had voted no were Somalis who were strongly in favour of joining

11700-426: The climate was already beginning to change, with sources of fresh water becoming more scarce. Engravings show dromedaries (animal of arid zones), some of which are ridden by armed warriors. The sedentary people now returned to a nomadic life. Stone tumuli of various shapes and sheltering graves dating from this period have been unearthed all over the territory. The earliest recorded ancient Egyptian expedition to Punt

11856-616: The climate). The moister Saharan conditions had begun about 12,500 BCE, with the extension of the ITCZ northward in the northern hemisphere summer, bringing moist wet conditions and a savanna climate to the Sahara, which (apart from a short dry spell associated with the Younger Dryas ) peaked during the Holocene thermal maximum climatic phase at 4000 BCE when mid-latitude temperatures seem to have been between 2 and 3 degrees warmer than in

12012-557: The coast of Somalia . Districts within Adal included Hubat , Gidaya and Hargaya . It also occasionally included the Hadiya Sultanate . The region was mostly located in modern day Awdal and had Zeila as a capital city but also controlled other interior towns like Abasa or Dakkar extending into the Harar plateau to the south-east and modern day Djibouti in the west. The Walashma dynasty are regarded by scholars as

12168-563: The colony of French Somaliland was established after the ruling Dir Somali and Afar sultans signed treaties with the French, and its railroad to Dire Dawa (and later Addis Ababa ) allowed it to quickly supersede Zeila as the port for southern Ethiopia and the Ogaden . It was renamed the French Territory of the Afars and the Issas in 1967. A decade later, the Djiboutian people voted for independence . This officially marked

12324-593: The commander of U.S. European Command, which covers most of Africa ... said that shortly after he took command of NATO in January 2002, a six-month analysis of U.S. force structure within European Command concluded that the United States likely would face a number of security challenges in Africa over the next 10 to 15 years and that a more robust engagement was needed. "Late last year, soldiers from

12480-474: The daytime. The smallest variations are found along the coastal regions due to high humidity and are often even lower than a 10 °C (18 °F) difference, while the largest variations are found in inland desert areas where the humidity is the lowest, mainly in the southern Sahara. Still, it is true that winter nights can be cold, as it can drop to the freezing point and even below, especially in high-elevation areas. The frequency of subfreezing winter nights in

12636-469: The desert experiences around three to five months when the average high strictly exceeds 40 °C (104 °F); while in the southern central part of the desert, there are up to six or seven months when the average high temperature strictly exceeds 40 °C (104 °F). Some examples of this are Bilma , Niger and Faya-Largeau, Chad. The annual average daily temperature exceeds 20 °C (68 °F) everywhere and can approach 30 °C (86 °F) in

12792-530: The desert, along with the highlands, have areas of sparse grassland and desert shrub , with trees and taller shrubs in wadis , where moisture collects. In the central, hyperarid region, there are many subdivisions of the great desert: Tanezrouft , the Ténéré , the Libyan Desert , the Eastern Desert , the Nubian Desert and others. These extremely arid areas often receive no rain for years. To

12948-531: The drying-out period from 6000 to 2500 BCE by pastoralists overgrazing available grassland. The growth of speleothems (which requires rainwater) was detected in Hol-Zakh, Ashalim , Even-Sid, Ma'ale-ha-Meyshar, Ktora Cracks, Nagev Tzavoa Cave, and elsewhere, and has allowed tracking of prehistoric rainfall. The Red Sea coastal route was extremely arid before 140 and after 115 kya (thousands of years ago). Slightly wetter conditions appear at 90–87 kya, but it still

13104-465: The earliest cities in the world to embrace Islam , shortly after the hijra . Zeila 's two- mihrab Masjid al-Qiblatayn dates to the 7th century, and is the oldest mosque. In the late 9th century, Al-Yaqubi , an Arab Muslim scholar and traveler, wrote that the Kingdom of Adal was a small wealthy kingdom and that Zeila served as the headquarters for the kingdom, which dated back to the beginning of

13260-510: The early 1990s, tensions over government representation led to armed conflict between Djibouti's ruling People's Rally for Progress (PRP) party and the Front for the Restoration of Unity and Democracy (FRUD) opposition group. The impasse ended in a power-sharing agreement in 2000. In April 2021, Ismael Guelleh , the second President of Djibouti since independence from France in 1977,

13416-667: The eastern continental extension of the Azores High , centered over the North Atlantic Ocean . The subsidence of the Sahara High nearly reaches the ground during the coolest part of the year, while it is confined to the upper troposphere during the hottest periods. The effects of local surface low pressure are extremely limited because upper-level subsidence still continues to block any form of air ascent. Also, to be protected against rain-bearing weather systems by

13572-614: The edge of the desert thousands of years ago, since the end of the last glacial period . In the Central Sahara, engraved and painted rock art were created perhaps as early as 10,000 years ago, spanning the Bubaline Period , Kel Essuf Period , Round Head Period , Pastoral Period , Caballine Period , and Cameline Period . The Sahara was then a much wetter place than it is today. Over 30,000 petroglyphs of river animals such as crocodiles survive, with half found in

13728-552: The eldest son of Sa'ad ad-Din II , would return to Adal from his exile in Arabia to restore his father's throne. He would proclaim himself "king of Adal" after his return from Yemen to the Harar plateau and established his new capital at Dakkar . Sabr ad-Din III and his brothers would defeat an army of 20,000 men led by an unnamed commander hoping to restore the "lost Amhara rule". The victorious king then returned to his capital, but gave

13884-610: The electorate supported disengagement from France, officially marking Djibouti's independence . Hassan Gouled Aptidon , an Issa (ethnic Somali) politician who had campaigned for a yes vote in the referendum of 1958, became the nation's first president (1977–1999). During its first year, Djibouti joined the Organization of African Unity (now the African Union ), the Arab League , and the United Nations. In 1986,

14040-425: The establishment of the Republic of Djibouti , named after its capital city . The new state joined the United Nations in its first year. In the early 1990s, tensions over government representation led to armed conflict , which ended in a power-sharing agreement in 2000 between the ruling party and the opposition. Djibouti is a multi-ethnic nation with a population of 1,066,809 at the census held on 20 May 2024 (

14196-891: The fertile region on the Mediterranean Sea coast, the Atlas Mountains of the Maghreb , and the Nile Valley in Egypt and the Sudan . It stretches from the Red Sea in the east and the Mediterranean in the north to the Atlantic Ocean in the west, where the landscape gradually changes from desert to coastal plains. To the south it is bounded by the Sahel , a belt of semi-arid tropical savanna around

14352-484: The flow of dry, cold air from higher latitudes of Eurasia into the Sahara significantly. The average annual rainfall ranges from very low in the northern and southern fringes of the desert to nearly non-existent over the central and the eastern part. The thin northern fringe of the desert receives more winter cloudiness and rainfall due to the arrival of low pressure systems over the Mediterranean Sea along

14508-534: The formation of multiple rump states such as Aussa , Tadjourah and Rahayto. Mamluk Egypt being conquered by the Ottomans alarmed the Arabian merchants, who were afraid of these new Turkish conquerors hence they chose to travel towards Adal's shores. This was also followed by Indian merchants fleeing from the same enemy. The Ottomans noticing this sudden mass movement, hastidly occupied Zeyla and established

14664-546: The founders of the Ifat Sultanate. Ifat first emerged when Umar Ibn Dunyā-ḥawaz, later to be known as Sultan Umar Walasma , carved out his own kingdom and conquered the Sultanate of Shewa located in northern Hararghe . In 1288 Sultan Wali Asma successfully imposed his rule on Hubat , Zeila and other Muslim states in the region. Taddesse Tamrat explains Sultan Walashma's military acts as an effort to consolidate

14820-625: The frontier. During the 1960s, the struggle for independence was led by the Front for the Liberation of the Somali Coast (FLCS), who waged an armed struggle for independence with much of its violence aimed at French personnel. FLCS used to initiate few mounting cross-border operations into French Somaliland from Somalia and Ethiopia to attacks on French targets. On March 24, 1975, the Front de Libération de la Côte des Somalis kidnapped

14976-459: The governments of the region on counterterrorism and border security issues." The Associated Press reported on May 6, 2004, that "The European Command has proposed expanding the Pan-Sahel Initiative to include Morocco, Tunisia and Algeria, where terror threats are believed to be growing...." [AP link not working.] In the May 11, 2004, New York Times , Craig Smith that the "U.S. [is] Training African Forces to Uproot Terrorists." Smith says that

15132-699: The habitat in areas of permanent water (oases) or where water comes close to the surface. Here, the local pressure on natural resources can be intense. The remaining populations of large mammals have been greatly reduced by hunting for food and recreation. In recent years development projects have started in the deserts of Algeria and Tunisia using irrigated water pumped from underground aquifers. These schemes often lead to soil degradation and salinization . Researchers from Hacettepe University have reported that Saharan soil may have bio-available iron and also some essential macro and micro nutrient elements suitable for use as fertilizer for growing wheat. People lived on

15288-405: The highest recorded worldwide. The sky is usually clear above the desert, and the sunshine duration is extremely high everywhere in the Sahara. Most of the desert has more than 3,600 hours of bright sunshine per year (over 82% of daylight hours), and a wide area in the eastern part has over 4,000 hours of bright sunshine per year (over 91% of daylight hours). The highest values are very close to

15444-551: The hottest months of the year. Salah, well known in Algeria for its extreme heat, has average high temperatures of 43.8 °C (110.8 °F), 46.4 °C (115.5 °F), 45.5 °C (113.9 °F) and 41.9 °C (107.4 °F) in June, July, August and September respectively. There are even hotter spots in the Sahara, but they are located in extremely remote areas, especially in the Azalai , lying in northern Mali. The major part of

15600-491: The hottest regions year-round. However, most of the desert has a value in excess of 25 °C (77 °F). Sand and ground temperatures are even more extreme. During daytime, the sand temperature is extremely high: it can easily reach 80 °C (176 °F) or more. A sand temperature of 83.5 °C (182.3 °F) has been recorded in Port Sudan . Ground temperatures of 72 °C (161.6 °F) have been recorded in

15756-453: The island, revealing it as the "Land of the Gods, a region far to the east in the direction of the sunrise, blessed with products for religious purposes", where traders returned with gold, ivory, ebony , incense , aromatic resins, animal skins, live animals, eye-makeup cosmetics, fragrant woods, and cinnamon. During the reign of Queen Hatshepsut in the 15th century BC, ships regularly crossed

15912-406: The last glacial period , the Sahara was much larger than it is today, extending south beyond its current boundaries. The end of the glacial period brought more rain to the Sahara, from about 8000 BCE to 6000 BCE, perhaps because of low pressure areas over the collapsing ice sheets to the north. Once the ice sheets were gone, the northern Sahara dried out. In the southern Sahara, the drying trend

16068-458: The late nineteenth century, The hypothesis was later formally proposed and tested by the meteorologist John Kutzbach in 1981. Kutzbach's ideas about the impacts of insolation on global monsoonal patterns have become widely accepted today as the underlying driver of long-term monsoonal cycles. Kutzbach never formally named his hypothesis and as such it is referred to here as the " Orbital Monsoon Hypothesis " as suggested by Ruddiman in 2001. During

16224-530: The leeward side by dropping much of the humidity brought by atmospheric disturbances along the polar front which affects the surrounding Mediterranean climates. The primary source of rain in the Sahara is the Intertropical Convergence Zone , a continuous belt of low-pressure systems near the equator which bring the brief, short and irregular rainy season to the Sahel and southern Sahara. Rainfall in this giant desert has to overcome

16380-419: The maximum area of water and to find any surface moisture, and by having small thick leaves or needles to prevent water loss by evapotranspiration . Plant leaves may dry out totally and then recover. Several species of fox live in the Sahara including: the fennec fox , pale fox and Rüppell's fox . The addax , a large white antelope , can go nearly a year in the desert without drinking. The dorcas gazelle

16536-623: The medieval historian al-Makrizi , Emperor Dawit I in 1403 pursued the Sultan of Adal , Sa'ad ad-Din II , to Zeila, where he killed the Sultan and sacked the city of Zeila . However, another contemporary source dates the death of Sa'ad ad-Din II to 1410, and credits Emperor Yeshaq with the slaying. His children and the remainder of the Walashma dynasty would flee to Yemen where they would live in exile until 1415. In 1415, Sabr ad-Din III ,

16692-437: The middle Holocene Tenerian culture . The post-Kiffian desiccation lasted until around 4600 BCE, when the earliest artefacts associated with the Tenerians have been dated to. Some 200 skeletons have been discovered at Gobero. The Tenerians were considerably shorter in height and less robust than the earlier Kiffians. Craniometric analysis also indicates that they were osteologically distinct. The Kiffian skulls are akin to those of

16848-519: The mysterious land of Punt. In the Eighteenth Dynasty of Egypt , Hatshepsut built a Red Sea fleet to facilitate trade between the head of the Gulf of Aqaba and points south as far as Punt to bring mortuary goods to Karnak in exchange for Nubian gold. Hatshepsut personally made the most famous ancient Egyptian expedition that sailed to Punt. Her artists revealing much about the royals, inhabitants, habitation and variety of trees on

17004-607: The nascent republic was also among the founding members of the Intergovernmental Authority on Development regional development organization. During the Ogaden War , influential Issa politicians envisioned a Greater Djibouti or "Issa-land", where Djibouti's borders would extend from the Red Sea to Dire Dawa . That dream was dashed towards the end of the war as Somali forces were routed from Ethiopia. In

17160-704: The neighboring Italians during the East African Campaign . In 1941, the Italians were defeated and the Vichy forces in French Somaliland were isolated. The Vichy French administration continued to hold out in the colony for over a year after the Italian collapse. In response, the British blockaded the port of Djibouti City but it could not prevent local French from providing information on the passing ship convoys. In 1942, about 4,000 British troops occupied

17316-536: The next base for Al Qaeda -- the largely ungoverned swath of territory stretching from the Horn of Africa to the Western Sahara's Atlantic coast," he writes. "Generals here ... say the vast, arid region is a new Afghanistan , with well-financed bands of Islamic militants recruiting, training and arming themselves. Terrorist attacks like the one on March 11 [2004] in Madrid that killed 191 people seem to have

17472-593: The north like Damot , Amhara , Angot , Inderta , Begemder , and Gojjam . He also threatened to plant khat at the capital, a stimulant used by Muslims but forbidden to Ethiopian Orthodox Christians . In 1376, Sultan Sa'ad ad-Din Abdul Muhammad , also called Sa'ad ad-Din II, succeeded his brother and came to power, who continued to attack the Abyssinian Christian army. He attacked regional chiefs such as at Zalan and Hadeya, who supported

17628-527: The north, the Sahara skirts the Mediterranean Sea in Egypt and portions of Libya, but in Cyrenaica and the Maghreb , the Sahara borders the Mediterranean forest, woodland, and scrub eco-regions of northern Africa, all of which have a Mediterranean climate characterized by hot summers and cool and rainy winters. According to the botanical criteria of Frank White and geographer Robert Capot-Rey,

17784-477: The northern limit of the Sahara corresponds to the northern limit of date palm cultivation and the southern limit of the range of esparto , a grass typical of the Mediterranean climate portion of the Maghreb and Iberia . The northern limit also corresponds to the 100 mm (3.9 in) isohyet of annual precipitation. To the south, the Sahara is bounded by the Sahel, a belt of dry tropical savanna with

17940-544: The oldest evidence of herding in the region, and they provide a better understanding of the development of Neolithic societies in this region. Up to 4000 years BCE, the region benefited from a climate very different from the one it knows today and probably close to the Mediterranean climate . The water resources were numerous with lakes in Gobaad, lakes Assal and Abbé larger and resembling real bodies of water. The humans therefore lived by gathering, fishing and hunting. The region

18096-459: The opposite is true, with decreased annual precipitation and less vegetation resulting in a phase of the Sahara climate cycle known as the "desert Sahara". The idea that changes in insolation (solar heating) caused by long-term changes in Earth's orbit are a controlling factor for the long-term variations in the strength of monsoon patterns across the globe was first suggested by Rudolf Spitaler in

18252-717: The order to his many followers to continue and extend the war against the Christians. The Emperor of Ethiopia Tewodros I was soon killed by the Adal Sultanate upon the return of Sa'ad ad-Din's heirs to the Horn of Africa. Sabr ad-Din III died a natural death and was succeeded by his brother Mansur ad-Din who invaded the capital and royal seat of the Solomonic Empire and drove Emperor Dawit I to Yedaya where according to al-Maqrizi , Sultan Mansur destroyed

18408-419: The physical and atmospheric barriers that normally prevent the production of precipitation. The harsh climate of the Sahara is characterized by: extremely low, unreliable, highly erratic rainfall; extremely high sunshine duration values; high temperatures year-round; negligible rates of relative humidity ; a significant diurnal temperature variation ; and extremely high levels of potential evaporation which are

18564-401: The polar front, although very attenuated by the rain shadow effects of the mountains and the annual average rainfall ranges from 100 millimetres (4 in) to 250 millimetres (10 in). For example, Biskra , Algeria, and Ouarzazate , Morocco, are found in this zone. The southern fringe of the desert along the border with the Sahel receives summer cloudiness and rainfall due to the arrival of

18720-497: The population fell after the completion of the railwayline to Dire Dawa and the original company failed and required a government bail-out, the rail link allowed the territory to quickly supersede the caravan-based trade carried on at Zeila (then in the British area of Somaliland ) and become the premier port for coffee and other goods leaving southern Ethiopia and the Ogaden through Harar . The 6th Somali Marching Battalion

18876-532: The recent past. Analysis of Nile River deposited sediments in the delta also shows this period had a higher proportion of sediments coming from the Blue Nile , suggesting higher rainfall also in the Ethiopian Highlands . This was caused principally by a stronger monsoonal circulation throughout the sub-tropical regions, affecting India, Arabia and the Sahara. Lake Victoria only recently became

19032-532: The region during this period from the family's proposed urheimat ("original homeland") in the Nile Valley , or the Near East . Other scholars propose that the Afroasiatic family developed in situ in the Horn, with its speakers subsequently dispersing from there. Cut stones dated about 3 million years old have been collected in the area of Lake Abbe . In the Gobaad plain (between Dikhil and Lake Abbe),

19188-548: The remains of the extinct elephant Palaeoloxodon recki were also discovered, visibly butchered using basalt tools found nearby. These remains would date from 1.4 million years BCE. Subsequently, other similar sites were identified as probably the work of Homo ergaster . An Acheulean site (from 800,000 to 400,000 years BCE), where stone was cut, was excavated in the 1990s, in Gombourta, between Damerdjog and Loyada , 15 km south of Djibouti City . Finally, in Gobaad,

19344-666: The request of integration in a possible " Greater Somalia " influenced by the Somali government or the simple independence of the territory. In 1975 the African People's League for the Independence (LPAI) and FLCS met in Kampala , Uganda with several meeting later they finally opted for independence path, causing tensions with Somalia . In 1976, members of the Front de Libération de la Côte des Somalis which sought Djibouti's independence from France , also clashed with

19500-608: The same area suggest that they lived on the shores of a lake that was present during the Holocene Wet Phase, a period when the Sahara was verdant and wet. The Kiffian people were tall, standing over six feet in height. Craniometric analysis indicates that this early Holocene population was closely related to the Late Pleistocene Iberomaurusians and early Holocene Capsians of the Maghreb, as well as mid-Holocene Mechta groups. Traces of

19656-412: The scale of the Nile floods between 2700 and 2100 BCE. The Sahara comprises several distinct ecoregions . With their variations in temperature, rainfall, elevation, and soil, these regions harbor distinct communities of plants and animals. The flora of the Sahara is highly diversified based on the bio-geographical characteristics of this vast desert. Floristically , the Sahara has three zones based on

19812-521: The shelter of shrubs such as balanites and acacias. They are unusually pale. The other cheetah subspecies ( northeast African cheetah ) lives in Chad, Sudan and the eastern region of Niger. However, it is currently extinct in the wild in Egypt and Libya. There are approximately 2000 mature individuals left in the wild. Other animals include the monitor lizards , hyrax , sand vipers , and small populations of African wild dog , in perhaps only 14 countries and red-necked ostrich . Other animals exist in

19968-400: The smallest in mainland Africa). French and Arabic are its two official languages; Afar and Somali are national languages. About 94% of Djiboutians adhere to Islam , which is the official religion and has been predominant in the region for more than 1,000 years. The Somalis and Afar make up the two largest ethnic groups, with the former comprising the majority of the population. Both speak

20124-596: The source of the White Nile and dried out almost completely around 15 kya. The sudden subsequent movement of the ITCZ southwards with a Heinrich event (a sudden cooling followed by a slower warming), linked to changes with the El Niño-Southern Oscillation cycle, led to a rapid drying out of the Saharan and Arabian regions, which quickly became desert. This is linked to a marked decline in

20280-526: The south, Ethiopia to the southwest, Eritrea in the north, and the Red Sea and the Gulf of Aden to the east. The country has an area of 23,200 km (8,958 sq mi). In antiquity, the territory, together with Ethiopia, Eritrea and Somaliland, was part of the Land of Punt . Nearby Zeila , now in Somaliland, was the seat of the medieval Adal and Ifat Sultanates. In the late 19th century,

20436-522: The span of fourteen years the Imam was able to conquer the heartland of the country, wreaking havoc on the Christian nation. The Bahri Negash joined Emperor Gelawdewos and the Portuguese in the decisive Battle of Wayna Daga , where tradition states that Imam Ahmad was shot in the chest by a Portuguese musketeer named João de Castilho, who had charged alone into the Muslim lines and died. The wounded Imam

20592-561: The strongest anticyclonic weather regime, and the annual average rainfall can drop to less than 1 millimetre (0.04 in). In fact, most of the Sahara receives less than 20 millimetres (0.8 in). Of the 9,000,000 square kilometres (3,500,000 sq mi) of desert land in the Sahara, an area of about 2,800,000 square kilometres (1,100,000 sq mi) (about 31% of the total area) receives an annual average rainfall amount of 10 millimetres (0.4 in) or less, while some 1,500,000 square kilometres (580,000 sq mi) (about 17% of

20748-486: The sultan would received an annual stipend from the local governor. Abubakr Pasha explained to Vice-Admiral Alphonse Fleuriot de Langle that when the Imam of Sana'a still controlled the Yemeni coast, some soldiers sent to Tadjoura were one day massacred by the inhabitants of the city. The governor of Mocha then dispatched a new detachment to avenge them. Rather than suffer these reprisals, the city preferred to commit to paying

20904-458: The temple murals at Deir el-Bahari , the Land of Punt was ruled at that time by King Parahu and Queen Ati. The Adal (also Awdal , Adl , or Adel ) was centered around Zeila , its capital. It was established by the local Somali clans in the early 9th century. Zeila attracted merchants from around the world, contributing to the wealth of the city. Zeila is an ancient city and it was one of

21060-434: The territory formerly ruled by the Ifat Sultanate, as well as the land further east all the way from the Bab el Mandeb to Cape Guardafui, according to Leo Africanus. Adal is mentioned by name in the 14th century in the context of the battles between the Muslims of the Somali and Afar seaboard and the Abyssinian King Amda Seyon I 's Christian troops. Adal originally had its capital in the port city of Zeila, situated in

21216-440: The theoretical maximum value. A value of 4300 hours (98%) of the time would be recorded in Upper Egypt ( Aswan , Luxor ) and in the Nubian Desert ( Wadi Halfa ). The annual average direct solar irradiation is around 2,800 kWh/(m year) in the Great Desert. The Sahara has a huge potential for solar energy production. The high position of the Sun, the extremely low relative humidity, and the lack of vegetation and rainfall make

21372-409: The tilt of the earth changes between 22° and 24.5°. At present, it is in a dry period, but it is expected that the Sahara will become green again in 15,000 years. When the North African monsoon is at its strongest, annual precipitation and subsequent vegetation in the Sahara region increase, resulting in conditions commonly referred to as the " green Sahara ". For a relatively weak North African monsoon,

21528-478: The total area) receives an average of 5 millimetres (0.2 in) or less. The annual average rainfall is virtually zero over a wide area of some 1,000,000 square kilometres (390,000 sq mi) in the eastern Sahara comprising deserts of: Libya, Egypt and Sudan ( Tazirbu , Kufra , Dakhla , Kharga , Farafra , Siwa , Asyut , Sohag , Luxor, Aswan, Abu Simbel , Wadi Halfa) where the long-term mean approximates 0.5 millimetres (0.02 in) per year. Rainfall

21684-520: The valley of the Dagadlé Wadi. Pottery predating the mid-2nd millennium has been found at Asa Koma , an inland lake area on the Gobaad Plain. The site's ware is characterized by punctate and incision geometric designs, which bear a similarity to the Sabir culture phase 1 ceramics from Ma'layba in Southern Arabia . Long-horned humpless cattle bones have likewise been discovered at Asa Koma, suggesting that domesticated cattle were present by around 3,500 years ago. Rock art of what appear to be antelopes and

21840-525: The water failed. Sa'd al Din was wounded in the forehead and fell to the ground, whereupon they pierced him with their swords. But he died happily, falling in God's cause. After Sa'ad ad-Din's death “the strength of the Muslims was abated”, as Maqrizi states, and then the Amhara settled in the country “and from the ravaged mosques and they made churches”. The followers of Islam were said to have been harassed for over twenty years. The sources disagree on which Ethiopian Emperor conducted this campaign. According to

21996-433: The western Awdal region. The polity at the time was an Emirate in the larger Ifat Sultanate ruled by the Walashma dynasty . According to I.M. Lewis, the polity was governed by local dynasties consisting of Somalized Arabs or Arabized Somalis, who also ruled over the similarly established Sultanate of Mogadishu in the Benadir region to the south. Adal's history from this founding period forth would be characterized by

22152-470: Was re-elected for his fifth term. Djibouti is a unitary presidential republic , with executive power resting in the presidency, which is by turn dominant over the cabinet, and legislative power in both the government and the National Assembly . The president , Ismaïl Omar Guelleh , is the prominent figure in Djiboutian politics—the head of state and commander-in-chief . The president exercises their executive power assisted by their appointee,

22308-477: Was a military leader of the medieval Adal Sultanate in the northern Horn of Africa. Between 1529 and 1543, he embarked on a campaign referred to as the Futuh Al-Habash , bringing the three-quarters of Christian Abyssinia under the control of the Muslim empire. With an army composed of Afar, Harari (Harla), and Somalis, al-Ghazi's forces came close to extinguishing the ancient Ethiopian kingdom, slaughtering any Ethiopian who refused to convert to Islam. Within

22464-404: Was a treaty where the Afars sold lands surrounding in Obock . The French were interested in having a coaling station for steamships , which would become especially important upon the opening of the Suez Canal in 1869. (Up to that time French ships had to buy coal at the British port of Aden across the gulf, an unwise dependency in case of war.) Later on, that treaty was used by the captain of

22620-417: Was also identified at the nearby site of Asa Koma . The faunal remains confirm the importance of fishing in Neolithic settlements close to Lake Abbé , but also the importance of bovine husbandry and, for the first time in this area, evidence for caprine herding practices. Radiocarbon dating places this occupation at the beginning of the 2nd millennium BCE, similar in range to Asa Koma. These two sites represent

22776-427: Was also met with demonstrations and rioting. In response to the protests, de Gaulle ordered another referendum. In 1967, a second plebiscite was held to determine the fate of the territory. Initial results supported a continued but looser relationship with France. Voting was also divided along ethnic lines, with the resident Somalis generally voting for independence, with the goal of eventual union with Somalia, and

22932-428: Was celebrated in popular literature in the Tale of the Shipwrecked Sailor . In the reign of Mentuhotep III (11th dynasty, ca. 2000 BC), an officer named Hannu organized one or more voyages to Punt, but it is uncertain whether he personally traveled on these expeditions. Trading missions of the 12th dynasty pharaohs Senusret I , Amenemhat II and Amenemhat IV had also successfully navigated their way to and from

23088-409: Was formed in Madagascar on May 11, 1916, with recruits from the French Somali Coast and renamed the 1st Battalion of Somali Tirailleurs upon arrival in France in June. Originally intended as a staging unit, the battalion’s officers responded to the Somalis' desire to fight, leading to their participation alongside the RICM in the October 1916 assault on Fort Douaumont. For their distinguished role,

23244-403: Was initially counteracted by the monsoon , which brought rain further north than it does today. By around 4200 BCE, however, the monsoon retreated south to approximately where it is today, leading to the gradual desertification of the Sahara. The Sahara is now as dry as it was about 13,000 years ago. Lake Chad is the remnant of a former inland sea, paleolake Mega-Chad, which existed during

23400-399: Was just one tenth the rainfall around 125 kya. In the southern Negev Desert speleothems did not grow between 185 and 140 kya ( MIS 6), 110–90 (MIS 5.4–5.2), nor after 85 kya nor during most of the interglacial period (MIS 5.1), the glacial period and Holocene . This suggests that the southern Negev was arid-to-hyper-arid in these periods. During the Last Glacial Maximum (LGM) the Sahara

23556-430: Was more extensive than it is now with the extent of the tropical forests being greatly reduced, and the lower temperatures reduced the strength of the Hadley Cell . This is a climate cell which causes rising tropical air of the Inter-Tropical Convergence Zone (ITCZ) to bring rain to the tropics, while dry descending air, at about 20 degrees north , flows back to the equator and brings desert conditions to this region. It

23712-400: Was one of the founding regions of the Ifat Sultanate alongside Biqulzar , Shewa , Kwelgora , Shimi, Jamme and Laboo. It was used ambiguously in the medieval era to indicate the Muslim inhabitant low land portion east of the Ethiopian Empire . Including north of the Awash River towards Lake Abbe in modern Djibouti–Ethiopia border as well as the territory between Shewa and Zeila on

23868-424: Was organized by Pharaoh Sahure of the Fifth Dynasty (25th century BC), returning with cargoes of antyue and Puntites. However, gold from Punt is recorded as having been in Egypt as early as the time of Pharaoh Khufu of the Fourth Dynasty . Subsequently, there were more expeditions to Punt in the Sixth , Eleventh , Twelfth and Eighteenth dynasties of Egypt. In the Twelfth Dynasty, trade with Punt

24024-445: Was populated by a very rich fauna: felines , buffaloes , elephants , rhinos , etc., as evidenced, for example, by the bestiary of cave paintings at Balho . In the 3rd and 2nd millennia BCE, few nomads settled around the lakes and practiced fishing and cattle breeding. The burial of an 18-year-old woman, dating from this period, as well as the bones of hunted animals, bone tools and small jewels have been unearthed. By about 1500 BCE,

24180-416: Was then beheaded by an Ethiopian cavalry commander, Azmach Calite. Once the Imam's soldiers learned of his death, they fled the battlefield. This conflict provided an opportunity for the Oromo people to conquer and migrate into the historically Gafat land of Welega south of the Blue Nile and eastward to the walls of Harar , establishing new territories. The collapse of the Adal Sultanate led to

24336-413: Was to "assist participating countries to counter known terrorist operations and border incursions, as well as trafficking of people, illicit materials, and other goods." In addition to the "training and material support," the release states, another program would "bring military and civilian officials from the four countries together to encourage greater cooperation and information exchange within and among

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