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173-761: In the Arabian Peninsula The United Arab Emirates ( UAE ), or simply the Emirates , is a country in West Asia , in the Middle East , at the eastern end of the Arabian Peninsula . It is a federal , elective monarchy composed of seven emirates , with Abu Dhabi as its capital. It shares land borders with Oman to the east and northeast, and with Saudi Arabia to the southwest; as well as maritime borders in

346-566: A military intervention in Yemen in March 2015. The civil war and subsequent military intervention and blockade caused a famine in Yemen . Qanat This is a system of water supply that allows water to be transported over long distances in hot dry climates without losing much of the water to evaporation . The system has the advantage of being resistant to natural disasters such as floods and to deliberate destruction in war. Furthermore, it

519-701: A 13,000-foot-deep (4,000-metre) bore hole taking a year to drill and turning out dry, at the tremendous cost at the time of £1 million. The British set up a development office that helped in some small developments in the emirates. The seven sheikhs of the emirates then decided to form a council to coordinate matters between them and took over the development office. In 1952, they formed the Trucial States Council, and appointed Adi Al Bitar , Dubai's Sheikh Rashid bin Saeed Al Maktoum 's legal advisor, as secretary general and legal advisor to

692-584: A 24-hour curfew, and suspending all Emirates passenger flights. This resulted in a major economic downturn, which eventually led to the merger of more than 50% of the UAE's federal agencies . On 29 August 2020, the UAE established normal diplomatic relations with Israel and with the help of the United States , they signed the Abraham Accords with Bahrain . On 9 February 2021, the UAE achieved

865-471: A conservation program on Sir Bani Yas Island initiated by Sheikh Zayed bin Sultan Al Nahyan in the 1970s, resulting in the survival of, for example, Arabian Oryx , Arabian camel , and leopards . Coastal fish and mammals consist mainly of mackerel , perch , and tuna , as well as sharks and whales. The climate of the UAE is subtropical-arid with hot summers and warm winters. The climate

1038-499: A crew of four workers can excavate a horizontal length of 40 m (130 ft) per day. When the vertical shaft reaches 40 m (130 ft), they can excavate only 20 meters horizontally per day and at 60 m (200 ft) in depth this drops below 5 horizontal meters per day. In Algeria, a common speed is just 2 m (6.6 ft) per day at a depth of 15 m (49 ft). Deep, long qanats (which many are) require years and even decades to construct. The excavated material

1211-460: A dozen enclaves. The UAE contains the following terrestrial ecoregions: Al Hajar montane woodlands and shrublands, Gulf of Oman desert and semi-desert , and Al-Hajar foothill xeric woodlands and shrublands . The oases grow date palms , acacia , and eucalyptus trees. In the desert, the flora is very sparse and consists of grasses and thorn bushes. The indigenous fauna had come close to extinction because of intensive hunting, which has led to

1384-550: A group of rulers travelling to Medina , converting to Islam, and subsequently driving a successful uprising against the unpopular Sassanids , who dominated the coast at the time. Following the death of Muhammad, the new Islamic communities south of the Persian Gulf threatened to disintegrate, with insurrections against the Muslim leaders . Caliph Abu Bakr sent an army from the capital Medina which completed its reconquest of

1557-582: A historic milestone when its probe, named Hope , successfully reached Mars 's orbit. The UAE became the first country in the Arab world to reach Mars, the fifth country to successfully reach Mars, and the second country, after an Indian probe , to orbit Mars on its maiden attempt. On 14 May 2022, Sheikh Mohamed bin Zayed Al Nahyan was elected as the UAE's new president after the death of Sheikh Khalifa bin Zayed Al Nahyan . The United Arab Emirates

1730-468: A national legislative body, with its lower house 50 per cent women. The UAE is the only country in the world that has a Ministry of Tolerance , a Ministry of Happiness , and a Ministry of Artificial Intelligence. The UAE also has a virtual ministry called the Ministry of Possibilities, designed to find solutions to challenges and improve quality of life. The UAE also has a National Youth Council , which

1903-569: A permanent military base in the emirate of Abu Dhabi. The UAE joined international military operations in Libya in March 2011. On 2 November 2004, the UAE's first president, Sheikh Zayed bin Sultan Al Nahyan , died. Sheikh Khalifa bin Zayed Al Nahyan was elected as the president of the UAE . Sheikh Mohammed bin Zayed Al Nahyan succeeded Sheikh Khalifa as crown prince of Abu Dhabi. In January 2006, Sheikh Maktoum bin Rashid Al Maktoum ,

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2076-452: A qanat is stored in a reservoir, typically with night flow stored for daytime use. An ab anbar is an example of a traditional Persian qanat-fed reservoir for drinking water. The qanat system has the advantage of being resistant to natural disasters such as floods, and to deliberate destruction in war. Furthermore, it is almost insensitive to the levels of precipitation, delivering a flow with only gradual variations from wet to dry years. From

2249-416: A qanat system had to be carefully situated, to make best use of the slow flow of water. In Iran, there were subterranean mills at Yazd and Boshruyeh ; at Taft and Ardestan mills were placed at the outflow from the qanat, before irrigation of the fields. Qanats used in conjunction with a wind tower can provide cooling as well as a water supply. A wind tower is a chimney-like structure positioned above

2422-563: A rare physical link to a legacy of Christianity, which is thought to have spread across the peninsula from 50 to 350 CE following trade routes. Certainly, by the fifth century, Oman had a bishop named John – the last bishop of Oman being Etienne, in 676 CE. The harsh desert environment led to the emergence of the "versatile tribesman", nomadic groups who subsisted due to a variety of economic activities, including animal husbandry, agriculture, and hunting. The seasonal movements of these groups led not only to frequent clashes between groups but also to

2595-433: A side shaft through the easily penetrated sandstone (presumably in the direction of greatest water seepage) into the hill of Ayn-Manâwîr (also written Ayn-Manawir  [ fr ] to allow collection of additional water. After this side shaft had been extended, another vertical shaft was driven to intersect the side shaft. Side chambers were built, and holes bored into the rock—presumably at points where water seeped from

2768-523: A small dam at the end. The width is approximately 60 cm (24 in), but the height ranges from 5 to 9 meters; it is likely that the qanat was deepened to enhance seepage when the water table dropped (as is also seen in Iran). From there the water was used to irrigate fields. There is another instructive structure located at the Kharga Oasis. A well that apparently dried up was improved by driving

2941-782: A small number of urban trading settlements, such as Mecca and Medina , located in the Hejaz in the west of the peninsula. Archaeology has revealed the existence of many civilizations in pre-Islamic Arabia (such as the Thamud ), especially in South Arabia . South Arabian civilizations include the Himyarite Kingdom , the Kingdom of Awsan , the Kingdom of Ma'īn , and the Sabaean Kingdom (usually considered to be

3114-725: A stone tool used for butchering animals discovered on the Arabian coast suggests an even older habitation from 130,000 years ago. In time, lively trading links developed with civilisations in Mesopotamia , Iran, and the Harappan culture of the Indus Valley. This contact persisted and became wider, probably motivated by the trade in copper from the Hajar Mountains , which commenced around 3,000 BCE. Sumerian sources talk of

3287-400: A sufficient flow is available to justify construction. If these prerequisites are met, the route is laid out aboveground. Equipment must be assembled. The equipment is straightforward: containers (usually leather bags), ropes, reels to raise the container to the surface at the shaft head, hatchets and shovels for excavation, lights, and spirit levels or plumb bobs and string. Depending upon

3460-518: A sustainability perspective, qanats are powered only by gravity and thus have low operation and maintenance costs. Qanats transfer fresh water from the mountain plateau to the lower-lying plains with saltier soil. This helps to control soil salinity and prevent desertification . The qanat should not be confused with the spring-flow tunnel typical to the mountainous area around Jerusalem . Although both are excavated tunnels designed to extract water by gravity flow, there are crucial differences. Firstly,

3633-515: A ten-meter width, with length reckoned by the size of plot that the available water will irrigate. The qanats are called kariz in Dari (Persian) and Pashto and have been in use since the pre-Islamic period. It is estimated that more than 9,370 karizes were in use in the 20th century. The oldest functional kariz which is more than 300 years old and 8 kilometers long is located in Wardak province and

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3806-733: Is Saudi Arabia. In the classical era, the Sinai Peninsula was also considered a part of Arabia. The Arabian Peninsula formed as a result of the rifting of the Red Sea between 56 and 23 million years ago, and is bordered by the Red Sea to the west and southwest, the Persian Gulf and the Gulf of Oman to the northeast, the Levant and Mesopotamia to the north and the Arabian Sea and

3979-552: Is a large volcanic field that extends from northwestern Arabia into Jordan and southern Syria . The Peninsula's constituent countries are (clockwise from north to south) Kuwait, Qatar, and the United Arab Emirates (UAE) on the east, Oman on the southeast, Yemen on the south, and Saudi Arabia at the center. The island country of Bahrain lies just off the east coast of the Peninsula. Due to Yemen's jurisdiction over

4152-462: Is about eight kilometres (5.0 miles) on a dirt track west of the town of New Madha. It consists of about forty houses with its own clinic and telephone exchange. Arabian Peninsula The Arabian Peninsula ( / ə ˈ r eɪ b i ə n p ə n ɪ n sj u l ə / ; Arabic : شِبْهُ الْجَزِيرَة الْعَرَبِيَّة , shibhu l-jazīra l-ʿarabiyya , "Arabian Peninsula" or جَزِيرَةُ الْعَرَب , jazīratu l-ʿarab , lit.   ' Island of

4325-421: Is almost insensitive to the levels of precipitation, delivering a flow with only gradual variations from wet to dry years. Karez are constructed as a series of well-like vertical shafts, connected by a gently sloping tunnel. This taps into underground water and delivers it to the surface by gravity, without need for pumping. The vertical shafts along the underground channel are for maintenance purposes, and water

4498-583: Is also used in Persian. Other names for qanat include kahan ( Persian : کهن ); Kahn ( Balochi ); kahriz/kəhriz ( Azerbaijan ); khettara ( Morocco ); Galerías , minas or viajes de agua (Spain); falaj ( Arabic : فلج ) ( United Arab Emirates and Oman ); foggara/fughara ( North Africa ). Alternative terms for qanats in Asia and North Africa are kakuriz , chin-avulz , and mayun . According to most sources, qanat technology

4671-584: Is categorized as desert climate. The hottest months are July and August, when average maximum temperatures reach above 45 °C (113 °F) on the coastal plain . In the Hajar Mountains, temperatures are considerably lower, a result of increased elevation. Average minimum temperatures in January and February are between 10 and 14 °C (50 and 57 °F). During the late summer months, a humid southeastern wind known as Sharqi (i.e. "Easterner") makes

4844-460: Is divided for administrative purposes into three major regions. The Emirate of Dubai extends along the Persian Gulf coast of the UAE for approximately 72 km (45 mi). Dubai has an area of 3,885 square kilometres (1,500 square miles), which is equivalent to 5% of the country's total area, excluding the islands. The Emirate of Sharjah extends along approximately 16 km (10 mi) of

5017-588: Is economically focusing on tourism and business. The UAE is considered a middle power . It is also a member of the United Nations , Arab League , Organisation of Islamic Cooperation , OPEC , Non-Aligned Movement , World Trade Organization , and BRICS . The UAE is also a dialogue partner of the Shanghai Cooperation Organisation . Human rights organisations consider the UAE substandard on human rights, ranking only 6.06 in

5190-416: Is governed by a Federal Supreme Council made up of the ruling Sheikhs of Abu Dhabi , Ajman , Fujairah , Sharjah , Dubai , Ras Al Khaimah , and Umm Al Quwain . All responsibilities not granted to the federal government are reserved to the individual emirate. A percentage of revenues from each emirate is allocated to the UAE's central budget. The UAE uses the title Sheikh instead of Emir to refer to

5363-614: Is known for its rich oil, i.e. petroleum production due to its geographical location. According to NASA's Gravity Recovery and Climate Experiment (GRACE) satellite data (2003–2013) analysed in a University of California, Irvine (UCI) -led study published in Water Resources Research on 16 June 2015, the most over-stressed aquifer system in the world is the Arabian Aquifer System , upon which more than 60 million people depend for water. Twenty-one of

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5536-658: Is located halfway between the Musandam peninsula and the rest of Oman in the Emirate of Sharjah . It covers approximately 75 square kilometres (29 square miles) and the boundary was settled in 1969. The north-east corner of Madha is closest to the Khor Fakkan-Fujairah road, barely 10 metres (33 feet) away. Within the Omani exclave of Madha, is a UAE exclave called Nahwa , also belonging to the Emirate of Sharjah. It

5709-705: Is located in the continent of Asia and is bounded by (clockwise) the Persian Gulf on the northeast, the Strait of Hormuz and the Gulf of Oman on the east, the Arabian Sea on the southeast, the Gulf of Aden , and the Guardafui Channel on the south, and the Bab-el-Mandeb strait on the southwest and the Red Sea, which is located on the southwest and west. The northern portion of the peninsula merges with

5882-588: Is no formal commitment to free speech. According to human rights organisations, there are systematic human rights violations, including the torture and forced disappearance of government critics. The UAE ranks poorly in freedom indices measuring civil liberties and political rights . The UAE is annually ranked as "Not Free" in Freedom House 's annual Freedom in the World report, which measures civil liberties and political rights. The UAE also ranks poorly in

6055-540: Is represented in the UAE cabinet by the Minister of Youth. The UAE legislative body is the Federal National Council which convenes nationwide elections every four years. The FNC consists of 40 members drawn from all the emirates. Each emirate is allocated specific seats to ensure full representation. Half are appointed by the rulers of the constituent emirates, and the other half are elected. By law,

6228-405: Is situated in the Middle East , bordering the Gulf of Oman and the Persian Gulf , between Oman and Saudi Arabia ; it is in a strategic location slightly south of the Strait of Hormuz , a vital transit point for world crude oil . The UAE lies between 22°30' and 26°10' north latitude and between 51° and 56°25′ east longitude. It shares a 530-kilometre (330 mi) border with Saudi Arabia on

6401-568: Is still providing water to nearly 3,000 people. Many of these ancient structures were destroyed during the Soviet–Aghan War and the War in Afghanistan . Maintenance has not always been possible. The cost of labour has become very high, and maintaining the kariz structures is no longer possible. Lack of skilled artisans who have the traditional knowledge also poses difficulties. A number of

6574-466: Is supported by the historian Albert T. Olmstead . There are four main oases in the Egyptian desert. The Kharga Oasis is one that has been extensively studied. There is evidence that as early as the second half of the 5th century BCE water brought in qanats was being used. The qanats were excavated through water-bearing sandstone rock, which seeps into the channel, with water collected in a basin behind

6747-669: Is the location of the Kaaba , Islam's holiest site, and the Masjid al-Nabawi (the Prophet's Mosque) in Medina is the location of Muhammad 's grave; as a result, from the 7th century, Mecca and Medina became the pilgrimage destinations for large numbers of Muslims from across the Islamic world . Despite its spiritual importance, in political terms Arabia soon became a peripheral region of

6920-402: Is the most populous emirate with 35.6% of the UAE population. The Emirate of Abu Dhabi has 31.2%, meaning that over two-thirds of the UAE population lives in either Abu Dhabi or Dubai. Abu Dhabi has an area of 67,340 square kilometres (26,000 square miles), which is 86.7% of the country's total area, excluding the islands. It has a coastline extending for more than 400 km (250 mi) and

7093-481: Is typically used only once it emerges from the daylight point. The qanats still create a reliable supply of water for human settlements and irrigation in hot, arid , and semi-arid climates, but the value of this system is directly related to the quality, volume, and regularity of the groundwater . Much of the population of Iran and other arid countries in North Africa and West Asia historically depended upon

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7266-407: Is unsuited to agriculture, making irrigation and land reclamation projects essential. The narrow coastal plain and isolated oases, amounting to less than 1% of the land area, are used to cultivate grains, coffee and tropical fruits . Goat, sheep, and camel husbandry is widespread elsewhere throughout the rest of the Peninsula. Some areas have a summer humid tropical monsoon climate , in particular

7439-403: Is used, has more than one qanat. Fields and gardens are located both over the qanats a short distance before they emerge from the ground and below the surface outlet. Water from the qanats define both the social regions in the city and the layout of the city. The water is freshest, cleanest, and coolest in the upper reaches, and more prosperous people live at the outlet or immediately upstream of

7612-453: Is usually transported by means of leather bags up the vertical shafts. It is mounded around the vertical shaft exit, providing a barrier that prevents windblown or rain driven debris from entering the shafts. These mounds may be covered to provide further protection to the qanat. From the air, these shafts look like a string of bomb craters. The qanat's water-carrying channel must have a sufficient downward slope that water flows easily. However

7785-644: Is very common for a qanat to start below the foothills of mountains, where the water table is closest to the surface. From this source, the qanat tunnel slopes gently downward, slowly converging with the steeper slope of the land surface above, and the water finally flows out above ground where the two levels meet. To connect a populated or agricultural area with an aquifer, qanats must often extend for long distances. Qanats are sometimes split into an underground distribution network of smaller canals called kariz. Like qanats, these smaller canals are below ground to avoid contamination and evaporation. In some cases water from

7958-513: The Al Ain / Buraimi Oasis was known as Tu'am and was an important trading post for camel routes between the coast and the Arabian interior. The earliest Christian site in the UAE was first discovered in the 1990s, an extensive monastic complex on what is now known as Sir Bani Yas Island and which dates back to the seventh century. Thought to be Nestorian and built in 600 CE, the church appears to have been abandoned peacefully in 750 CE. It forms

8131-739: The Al Saud , began in Najd in central Arabia in 1744, when Muhammad bin Saud , founder of the dynasty, joined forces with the religious leader Muhammad ibn Abd al-Wahhab , founder of the Wahhabi movement , a strict puritanical form of Sunni Islam. The Emirate of Diriyah established in the area around Riyadh rapidly expanded and briefly controlled most of the present-day territory of Saudi Arabia, sacking Karbala in 1802, and capturing Mecca in 1803. The Damascus Protocol of 1914 provides an illustration of

8304-732: The Arabs ' ), or Arabia , is a peninsula in West Asia , situated northeast of Africa on the Arabian Plate . At 3,237,500 km (1,250,000 sq mi), comparable in size to India , the Arabian Peninsula is the largest peninsula in the world. Geographically, the Arabian Peninsula includes Bahrain , Kuwait , Oman , Qatar , Saudi Arabia , the United Arab Emirates (UAE) and Yemen , as well as southern Iraq and Jordan . The largest of these

8477-455: The Dhofar and Al Mahrah areas of Oman and Yemen. These areas allow for large scale coconut plantations. Much of Yemen has a tropical monsoon rain influenced mountain climate. The plains usually have either a tropical or subtropical arid desert climate or arid steppe climate . The sea surrounding the Arabian Peninsula is generally tropical sea with a very rich tropical sea life and some of

8650-483: The First Islamic State - a single Arab Muslim religious polity in the Arabian Peninsula. Under the subsequent Rashidun and Umayyad Caliphates , rapid expansion of Arab power well beyond the Arabian peninsula formed a vast Muslim Arab Empire with an area of influence that stretched from the northwest Indian subcontinent , across Central Asia , the Middle East , North Africa , southern Italy , and

8823-585: The Hejaz ( Tihamah for the western coast), as described by Ibn al-Faqih . In antiquity, the term "Arabia" encompassed a larger area than the current term "Arabian Peninsula" and included the Arabian desert and large parts of the Syrian-Arabian desert . During the Hellenistic period , the area was known as Arabia ( Ancient Greek : Ἀραβία ). The Romans named three regions "Arabia": One of

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8996-721: The Iberian Peninsula , to the Pyrenees . With Muhammad's death in 632, disagreement broke out over who would succeed him as leader of the Muslim community. Umar ibn al-Khattab , a prominent companion of Muhammad, nominated Abu Bakr , who was Muhammad's intimate friend and collaborator. Others added their support and Abu Bakr was made the first caliph . This choice was disputed by some of Muhammad's companions, who held that Ali ibn Abi Talib , his cousin and son-in-law, had been designated his successor. Abu Bakr's immediate task

9169-531: The Indian Ocean to the southeast. The peninsula plays a critical geopolitical role in the Arab world and globally due to its vast reserves of oil and natural gas . Before the modern era, the region was divided into primarily four distinct regions: the Central Plateau ( Najd and Al-Yamama ), South Arabia ( Yemen , Hadhramaut and Oman ), Al-Bahrain (Eastern Arabia or Al-Hassa ), and

9342-876: The Indian subcontinent for a long time. Cotton appears in the Inquiry into Plants by Theophrastus and is mentioned in the Laws of Manu . As transregional trade networks expanded and intensified, cotton spread from its homeland to India and into the Middle East. One theory is that the qanat was developed to irrigate cotton fields, first in what is now Iran, where it doubled the amount of available water for irrigation and urban use. Because of this, Persia enjoyed larger surpluses of agricultural products, thus increasing urbanization and social stratification. The qanat technology subsequently spread from Persia westward and eastward. In

9515-497: The Islamic world , in which the most important medieval Islamic states were based at various times in such far away cities as Damascus , Baghdad , and Cairo . However, from the 10th century (and, in fact, until the 20th century) the Hashemite Sharifs of Mecca maintained a state in the most developed part of the region, the Hejaz . Their domain originally comprised only the holy cities of Mecca and Medina but in

9688-730: The Magan civilisation, which has been identified as encompassing the modern UAE and Oman. There are six periods of human settlement with distinctive behaviours in the region before Islam, which include the Hafit period from 3,200 to 2,600 BCE, the Umm Al Nar culture from 2,600 to 2,000 BCE, and the Wadi Suq culture from 2,000 to 1,300 BCE. From 1,200 BCE to the advent of Islam in Eastern Arabia, through three distinctive Iron Ages and

9861-441: The Mleiha period, the area was variously occupied by the Achaemenids and other forces, and saw the construction of fortified settlements and extensive husbandry thanks to the development of the falaj irrigation system. The spread of Islam to the northeastern tip of the Arabian Peninsula is thought to have followed directly from a letter sent by the Islamic prophet Muhammad to the rulers of Oman in 630 CE. This led to

10034-461: The Nefud Desert dates to approximately 90,000 years ago and is the oldest human fossil discovered outside of Africa and the Levant. This indicates human migrations from Africa to Arabia occurred around this time. The Arabian Peninsula may have been the homeland of a ' Basal Eurasian ' population, which diverged from other Eurasians soon after the Out-of-Africa migration, and subsequently became isolated, until it started to mix with other populations in

10207-449: The Persian Gulf with Qatar and Iran , and with Oman in the Gulf of Oman . As of 2024, the UAE has an estimated population of over 10 million, of which 11% are Emiratis; Dubai is the most populous city and is an international hub. Islam is the official religion and Arabic is the official language, while English is the most spoken language and the language of business. The United Arab Emirates' oil and natural gas reserves are

10380-412: The Rashidun or "rightly guided" Caliphate . Under the Rashidun Caliphs, and, from 661, their Umayyad successors , the Arabs rapidly expanded the territory under Muslim control outside of Arabia. In a matter of decades Muslim armies decisively defeated the Byzantine army and destroyed the Persian Empire , conquering huge swathes of territory from the Iberian peninsula to India. The political focus of

10553-419: The Royal Navy to defend the sheikhdoms . On 24 January 1968, British Prime Minister Harold Wilson announced the government's decision, reaffirmed in March 1971 by Prime Minister Edward Heath , to end the treaty relationships with the seven trucial sheikhdoms. Days after the announcement, the ruler of Abu Dhabi, Sheikh Zayed bin Sultan Al Nahyan , fearing vulnerability, tried to persuade the British to honour

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10726-427: The Socotra Archipelago , the Peninsula's geopolitical outline faces the Guardafui Channel and the Somali Sea to the south. The six countries of Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, and the UAE form the Gulf Cooperation Council (GCC). The Kingdom of Saudi Arabia covers the greater part of the Peninsula. The majority of the population of the Peninsula lives in Saudi Arabia and Yemen. The Peninsula contains

10899-404: The Syrian Desert with no clear borderline, although the northern boundary of the peninsula is generally considered to be the northern borders of Saudi Arabia and Kuwait, also southern regions of Iraq and Jordan. The most prominent feature of the peninsula is desert , but in the southwest, there are mountain ranges, which receive greater rainfall than the rest of the peninsula. Harrat ash Shaam

11072-409: The Tuwayr , Shammar and Dhofar generally do not exceed 1,000 m (3,300 ft) in height. Not all mountains in the peninsula are visibly within ranges. Jebel Hafeet in particular, on the border of the UAE and Oman, measuring between 1,100 and 1,300 m (3,600 and 4,300 ft), is not within the Hajar range, but may be considered an outlier of that range. Most of the Arabian Peninsula

11245-455: The United Kingdom represented Abu Dhabi and Oman in their dispute with Saudi Arabia over the Buraimi Oasis . A 1974 agreement between Abu Dhabi and Saudi Arabia seemed to have settled the Abu Dhabi-Saudi border dispute , but this has not been ratified. The UAE's border with Oman was ratified in 2008. PDTC continued its onshore exploration away from the disputed area, drilling five more bore holes that were also dry. However, on 27 October 1960,

11418-410: The United States –led 2003 invasion of Iraq . Despite its historically sparse population, political Arabia stands out for its rapid population growth, driven by both significant inflows of migrant labor and persistently high birth rates. The population is characterized by its relative youth and a heavily skewed gender ratio favoring males. In several states, the number of South Asians surpasses that of

11591-414: The human freedom index , citing reports of government critics being imprisoned and tortured, families harassed by the state security apparatus, and cases of forced disappearances . Individual rights such as the freedoms of assembly , association , expression , and the freedom of the press are severely repressed. Stone tools recovered reveal a settlement of people from Africa some 127,000 years ago and

11764-464: The nomes of Ptolemaic Egypt was named Arabia . Arabians used a north–south division of Arabia: ash-Sham vs. al-Yaman , or Arabia Deserta vs. Arabia Felix . Arabia Felix had originally been used for the whole peninsula, and at other times only for the southern region. Because its use became limited to the south, the whole peninsula was simply called Arabia. Arabia Deserta was the entire desert region extending north from Arabia Felix to Palmyra and

11937-445: The province of Khorasan have been recorded with vertical shafts of up to 275 m (902 ft). The vertical shafts support construction and maintenance of the underground channel as well as air interchange. Deep shafts require intermediate platforms to facilitate the process of removing soil. The construction speed depends on the depth and nature of the ground. If the earth is soft and easy to work, at 20 m (66 ft) depth

12110-430: The 13th century it was extended to include the rest of the Hejaz . Although, the Sharifs exercised at most times independent authority in the Hejaz , they were usually subject to the suzerainty of one of the major Islamic empires of the time. In the Middle Ages, these included the Abbasids of Baghdad , and the Fatimids , Ayyubids , and Mamluks of Egypt . The provincial Ottoman Army for Arabia (Arabistan Ordusu)

12283-408: The British promised to protect the Trucial Coast from all aggression by sea and to help in case of land attack. British maritime policing meant that pearling fleets could operate in relative security. However, the British prohibition of the slave trade meant an important source of income was lost to some sheikhs and merchants. In 1869, the Qubaisat tribe settled at Khor Al Adaid and tried to enlist

12456-588: The British treaty relationship was to expire in December of that year. Fears of vulnerability were realised the day before independence. An Iranian destroyer group broke formation from an exercise in the lower Gulf, sailing to the Tunb islands . The islands were taken by force, civilians and Arab defenders alike allowed to flee. A British warship stood idle during the course of the invasion. A destroyer group approached

12629-519: The British-Trucial Sheikhdoms treaty expired on 1 December 1971, both emirates became fully independent. On 2 December 1971, six of the emirates (Abu Dhabi, Ajman, Dubai, Fujairah, Sharjah, and Umm Al Quwain) agreed to enter into a union named the United Arab Emirates. Ras al-Khaimah joined later, on 10 January 1972. In February 1972, the Federal National Council (FNC) was created; it was a 40-member consultative body appointed by

12802-690: The Euphrates, including all the area between Pelusium on the Nile and Babylon. This area was also called Arabia and not sharply distinguished from the peninsula. The Arabs and the Ottoman Empire considered the west of the Arabian Peninsula region where the Arabs lived 'the land of the Arabs' – Bilad al-'Arab ( Arabia ), and its major divisions were the bilad al-Sham ( Levant ), bilad al-Yaman ( Yemen ), and Bilad al-'Iraq ( Iraq ). The Ottomans used

12975-516: The Global War on Terror for the Horn of Africa at Al Dhafra Air Base located outside of Abu Dhabi. The air base also supported Allied operations during the 1991 Persian Gulf War and Operation Northern Watch . The country had already signed a military defence agreement with the U.S. in 1994 and one with France in 1995. In January 2008, France and the UAE signed a deal allowing France to set up

13148-618: The Greater and the Lesser Tunbs, when Iran captured them during the British rule, resulting in disputes with Iran that remain unresolved. The UAE also disputes claim on other islands against the neighboring state of Qatar. The largest emirate, Abu Dhabi , accounts for 87% of the UAE's total area, 67,340 square kilometres (26,000 sq mi). The smallest emirate, Ajman , encompasses only 259 km (100 sq mi). The UAE coast stretches for nearly 650 km (404 mi) along

13321-435: The Gulf . British expeditions to protect their Indian trade routes led to campaigns against Ras Al Khaimah and other harbours along the coast, including the Persian Gulf campaign of 1809 and the more successful campaign of 1819 . The following year, Britain and a number of local rulers signed a maritime truce , giving rise to the term Trucial States , which came to define the status of the coastal emirates. A further treaty

13494-575: The Gulf Cooperation Council's mediation. He eventually handed power to Vice President Hadi, who was sworn in as President of Yemen on 25 February 2012. Hadi launched a national dialogue to address new constitutional, political and social issues. The Houthi movement , dissatisfied with the outcomes of the national dialogue, launched an offensive and stormed the Yemeni capital Sanaa on 21 September 2014. In response, Saudi Arabia launched

13667-580: The Iranian qanat. The foggara is dug into the foothills of a fairly steep mountain range such as the eastern ranges of the Atlas Mountains . Rainfall in the mountains enters the aquifer and moves toward the Saharan region to the south. The foggara, 1 to 3 km (0.62 to 1.9 mi) in length, penetrates the aquifer and collects water. Families maintain the foggara and own the land it irrigates over

13840-487: The Middle East since around 25,000 years ago. These different Middle Eastern populations would later spread Basal Eurasian ancestry via the Neolithic Revolution to all of Western Eurasia. There is evidence that human habitation in the Arabian Peninsula dates back to about 106,000 to 130,000 years ago. The harsh climate historically prevented much settlement in the pre-Islamic Arabian Peninsula, apart from

14013-571: The Muslim world then shifted to the newly conquered territories. Nevertheless, Mecca and Medina remained the spiritually most important places in the Muslim world . The Qur'an requires every able-bodied Muslim who can afford it, as one of the five pillars of Islam , to make a pilgrimage, or Hajj , to Mecca during the Islamic month of Dhu al-Hijjah at least once in his or her lifetime. The Masjid al-Haram (the Grand Mosque) in Mecca

14186-638: The Persian Gulf region. By the 18th century, the Bani Yas confederation was the dominant force in most of the area now known as Abu Dhabi, while the Northern Al Qawasim (Al Qasimi) dominated maritime commerce. The Portuguese maintained an influence over the coastal settlements, building forts in the wake of the bloody 16th-century conquests of coastal communities by Albuquerque and the Portuguese commanders who followed him – particularly on

14359-471: The Persian Gulf, and the ownership of some of them has been the subject of international disputes with both Iran and Qatar . The smaller islands, as well as many coral reefs and shifting sandbars, are a menace to navigation. Strong tides and occasional windstorms further complicate ship movements near the shore. The UAE also has a stretch of the Al Bāţinah coast of the Gulf of Oman. The Musandam Peninsula ,

14532-527: The Saudi Arabian border and rallied popular support. The royalist side received support from Saudi Arabia, while the republicans were supported by Egypt and the Soviet Union. Both foreign irregular and conventional forces were also involved. The Egyptian President , Gamal Abdel Nasser , supported the republicans with as many as 70,000 troops. Despite several military moves and peace conferences,

14705-602: The Trucial States. In 1922, the British government secured undertakings from the rulers of the Trucial States not to sign concessions with foreign companies without their consent. Aware of the potential for the development of natural resources such as oil, following finds in Persia (from 1908) and Mesopotamia (from 1927), a British-led oil company, the Iraq Petroleum Company (IPC), showed an interest in

14878-460: The UAE's Persian Gulf coastline and for more than 80 km (50 mi) into the interior. The northern emirates which include Fujairah, Ajman, Ras al-Khaimah, and Umm al-Qaiwain all have a total area of 3,881 square kilometres (1,498 square miles). There are two areas under joint control. One is jointly controlled by Oman and Ajman, the other by Fujairah and Sharjah. There is an Omani exclave surrounded by UAE territory, known as Wadi Madha . It

15051-650: The Upper Thamama rock formation. This was the first commercial discovery of the Trucial Coast, leading to the first exports of oil in 1962. ADMA made further offshore discoveries at Zakum and elsewhere, and other companies made commercial finds such as the Fateh oilfield off Dubai and the Mubarak field off Sharjah (shared with Iran). Meanwhile, onshore exploration was hindered by territorial disputes. In 1955,

15224-485: The annual Reporters without Borders ' Press Freedom Index . The Bertelsmann Transformation Index describes the UAE as a "moderate monarchy". The country was ranked 91 out of 137 states and is far below the average scoring for development towards a democracy. According to the 2023 V-Dem Democracy indices , the United Arab Emirates is the third least electoral democratic country in the Middle East . The United Arab Emirates comprises seven emirates. The Emirate of Dubai

15397-574: The arid coastal desert of Peru, a technology of water supply similar to that of the qanats, called puquios , was developed. Most archaeologists believe that the puquios are indigenous and date to about 500 CE, but a few believe they are of Spanish origin, brought to the Americas in the 16th century. Puquios were still in use in the Nazca region in the 21st century. In arid and semi-arid regions, owing to high evaporation, transportation routes were in

15570-577: The attempt of the establishment of an Islamist state in the UAE. Mindful of the protests in nearby Bahrain, in November 2012 the UAE outlawed online mockery of its government or attempts to organise public protests through social media. On 29 January 2020, the COVID-19 pandemic was confirmed to have reached the UAE . Two months later, in March, the government announced the closure of shopping malls, schools, and places of worship, in addition to imposing

15743-573: The biblical land of Sheba ). From 106 AD to 630 AD northwestern Arabia was under the control of the Roman Empire , which renamed it Arabia Petraea . Central Arabia was the location of the Kingdom of Kinda in the 4th, 5th and early 6th centuries. Eastern Arabia was home to the Dilmun civilization . The earliest known events in Arabian history are migrations from the peninsula into neighbouring areas. The Arabian Peninsula has long been accepted as

15916-409: The biggest ongoing threat believed to be coastal construction activity altering the marine environment. The fertile soils of Yemen have encouraged settlement of almost all of the land from sea level up to the mountains at 10,000 feet (3,000 m). In the higher elevations, elaborate terraces have been constructed to facilitate grain, fruit, coffee, ginger and khat cultivation. The Arabian peninsula

16089-490: The coastal region especially unpleasant. The average annual rainfall in the coastal area is less than 120 mm (4.7 in), but in some mountainous areas annual rainfall often reaches 350 mm (13.8 in). Rain in the coastal region falls in short, torrential bursts during the winter months, sometimes resulting in floods in ordinarily dry wadi beds. The region is prone to occasional, violent dust storms , which can severely reduce visibility. On 28 December 2004, snow

16262-548: The company discovered oil in commercial quantities at the Murban No. 3 well on the coast near Tarif. In 1962, PDTC became the Abu Dhabi Petroleum Company . As oil revenues increased, the ruler of Abu Dhabi, Zayed bin Sultan Al Nahyan , undertook a massive construction program, building schools, housing, hospitals, and roads. When Dubai's oil exports commenced in 1969, Sheikh Rashid bin Saeed Al Maktoum ,

16435-474: The cool tunnel walls/water and by the transfer of latent heat of evaporation as water evaporates into the air stream. In dry desert climates this can result in a greater than 15 °C reduction in the air temperature coming from the qanat; the mixed air still feels dry, so the basement is cool and only comfortably moist (not damp). Wind tower and qanat cooling have been used in desert climates for over 1,000 years. By 400 BCE, Persian engineers had mastered

16608-569: The council members have to be equally divided between males and females. The FNC is restricted to a largely consultative role. The United Arab Emirates is an authoritarian federal monarchy . According to the New York Times , the UAE is "an autocracy with the sheen of a progressive, modern state". The UAE has been described as a "tribal autocracy" where the seven constituent monarchies are led by tribal rulers in an autocratic fashion. There are no democratically elected institutions, and there

16781-436: The council. The council was terminated once the United Arab Emirates was formed. The tribal nature of society and the lack of definition of borders between emirates frequently led to disputes, settled either through mediation or, more rarely, force. The Trucial Oman Scouts was a small military force used by the British to keep the peace. In 1953, a subsidiary of BP , D'Arcy Exploration Ltd, obtained an offshore concession from

16954-437: The destination to which the water will be delivered into the soil and works toward the source (the test well). Vertical shafts are excavated along the route, separated at a distance of 20–35 m (66–115 ft). The separation of the shafts is a balance between the amount of work required to excavate them and the amount of effort required to excavate the space between them, as well as the ultimate maintenance effort. In general,

17127-414: The downward gradient must not be so great as to create conditions under which the water transitions between supercritical and subcritical flow . If this occurs, the waves that result can result in severe erosion that can damage or destroy the qanat. The choice of the slope is a trade off between erosion and sedimentation. Highly sloped tunnels are subject to more erosion as water flows at a higher speed. On

17300-489: The east coast at Muscat , Sohar , and Khor Fakkan . The southern coast of the Persian Gulf was known to the British as the " Pirate Coast ", as boats of the Al Qawasim federation harassed British-flagged shipping from the 17th century into the 19th. The charge of piracy is disputed by modern Emirati historians, including the current ruler of Sharjah, Sheikh Sultan Al Qasimi , in his 1986 book The Myth of Arab Piracy in

17473-573: The east) constituting only a quarter of people aged between 20 and 40. The eleven most populous cities on the Arabian Peninsula are: The rocks exposed vary systematically across Arabia, with the oldest rocks exposed in the Arabian-Nubian Shield near the Red Sea, overlain by earlier sediments that become younger towards the Persian Gulf. Perhaps the best-preserved ophiolite on Earth, the Semail Ophiolite , lies exposed in

17646-530: The eastern Al-Qassim Province , which would indicate that many prehistoric sites, located along a network of rivers, had once existed in the area. Acheulean tools found in Saffaqah, Riyadh Region reveal that hominins lived in the Arabian Peninsula around 188,000 years ago. Human habitation in Arabia may have occurred as early as 130,000 years ago. A fossilized Homo sapiens finger bone found at Al Wusta in

17819-551: The eastern, southern and northwestern borders of the peninsula. Broadly, the ranges can be grouped as follows: From the Hejaz southwards, the mountains show a steady increase in altitude westward as they get nearer to Yemen, and the highest peaks and ranges are all located in Yemen. The highest, Jabal An-Nabi Shu'ayb or Jabal Hadhur of the Haraz subrange of the Sarawat range, is 3,666 metres (12,028 ft) high. By comparison,

17992-469: The effort. There were still functional qanat systems in 2009. American forces were reported to have unintentionally destroyed some of the channels during expansion of a military base, creating tensions between them and the local community. Some of these tunnels were used to store supplies, and to move men and equipment underground. Qanats have been preserved in Armenia in the community of Shvanidzor , in

18165-704: The establishment of seasonal and semi-seasonal settlements and centres. These formed tribal groupings whose names are still carried by modern Emiratis, including the Bani Yas and Al Bu Falah of Abu Dhabi , Al Ain, Liwa , and the west coast; the Dhawahir , Awamir, Al Ali , and Manasir of the interior; the Sharqiyin of the east coast; and the Qawasim to the north. With the expansion of European colonial empires , Portuguese, English, and Dutch forces appeared in

18338-477: The federation. In general, the rulers of the emirates accepted the British interventions, but in the case of boundary disputes between Abu Dhabi and Dubai, and also between Dubai and Sharjah, conflicting claims were not resolved until after the UAE became independent. The most complicated borders were in the Western Hajar Mountains , where five of the emirates contested jurisdiction over more than

18511-459: The foggara. The moist air of the agricultural area is drawn into the foggara in the opposite direction to the water run-off. In the foggara it condenses on the tunnel walls and the air passes out of the vertical shafts. This condensed moisture is available for reuse. Qanat irrigation technology was introduced to Egypt by the Achaemenid king Darius I during his reign of 522 BCE-486 BCE, which

18684-447: The form of qanats, which led groundwater to consumption areas along underground tunnels. In the long run, the qanat system is not only economical but also sustainable for irrigation and agricultural purposes.… The ground water flow was known to depend on grain size of sediments, and, therefore, the tunnels in qanats are filled in with coarser material than the surrounding host geological formations. The qanats are constructed mainly along

18857-506: The government presided over by the prime minister. The prime minister, who is appointed by the Federal Supreme Council , appoints the ministers. The Council of Ministers is made up of 22 members and manages all internal and foreign affairs of the federation under its constitutional and federal law. In December 2019, the UAE became the only Arab country, and one of only five countries in the world, to attain gender parity in

19030-849: The gradient is steeper, underground waterfalls may be constructed with appropriate design features (usually linings) to absorb the energy with minimal erosion. In some cases the water power has been harnessed to drive underground mills . If it is not possible to bring the outlet of the qanat out near the settlement, it is necessary to run a jub or canal overground. This is avoided when possible to limit pollution, warming and water loss due to evaporation. The vertical shafts may be covered to minimize blown-in sand. The channels of qanats must be periodically inspected for erosion or cave-ins, cleaned of sand and mud and otherwise repaired. For safety, air flow must be assured before entry. Some damaged qanats have been restored. To be sustainable, restoration needs to take into account many nontechnical factors beginning with

19203-427: The house; of its four openings, the one opposite the wind direction is opened to move air out of the house. Incoming air is pulled from a qanat below the house. The air flow across the vertical shaft opening creates a lower pressure (see Bernoulli effect ) and draws cool air up from the qanat tunnel, mixing with it. The air from the qanat is drawn into the tunnel at some distance away and is cooled both by contact with

19376-522: The ice was stored in yakhchals—specially designed, naturally cooled refrigerators. A large underground space with thick insulated walls was connected to a qanat, and a system of windcatchers or wind towers was used to draw cool subterranean air up from the qanat to maintain temperatures inside the space at low levels, even during hot summer days. As a result, the ice melted slowly and was available year-round. Qanats (designated foggaras in Algeria ) are

19549-583: The island of Abu Musa as well. But there, Sheikh Khalid bin Mohammed Al Qasimi had already negotiated with the Iranian shah, and the island was quickly leased to Iran for $ 3 million a year. Meanwhile, Saudi Arabia laid claim to swathes of Abu Dhabi. Originally intended to be part of the proposed Federation of Arab Emirates, Bahrain became independent in August, and Qatar in September 1971. When

19722-450: The large farmers are abandoning their kariz which has been in their families sometimes for centuries, and moving to tube and dug wells backed by diesel pumps. However, the government of Afghanistan was aware of the importance of these structures and all efforts were made to repair, reconstruct and maintain (through the community) the kariz. The Ministry of Rural Rehabilitation and Development along with national and international NGOs made

19895-423: The lower reaches are the most likely to see substantial reductions in flow. Traditionally qanats are built by a group of skilled laborers, muqannīs , with hand labor. The profession historically paid well and was typically handed down from father to son. The critical, initial step in qanat construction is identification of an appropriate water source. The search begins at the point where the alluvial fan meets

20068-586: The main course of the Ziz River and its subsequent impact on local water tables is said to be one of the many reasons for the loss of half of the khettara. The black berbers ( haratin ) of the south were the hereditary class of qanat diggers in Morocco who build and repair these systems. Their work was hazardous. The foggara water management system in Tunisia, used to create oases, is similar to that of

20241-537: The modern era, the term bilad al-Yaman came to refer specifically to the southwestern parts of the peninsula. Arab geographers started to refer to the whole peninsula as 'jazirat al-Arab', or the peninsula of the Arabs. The railway was started in 1900 at the behest of the Ottoman Sultan Abdul Hamid II and was built largely by the Turks , with German advice and support. A public subscription

20414-491: The modern state of Saudi Arabia. The Saudis absorbed the Emirate of Asir , with their expansion only ending in 1934 after a war with Yemen . Two Saudi states were formed and controlled much of Arabia before Ibn Saud was even born. Ibn Saud, however, established the third Saudi state. The second major development has been the discovery of vast reserves of oil in the 1930s. Its production brought great wealth to all countries of

20587-472: The mountains of the UAE and northern Oman. The peninsula consists of: Arabia has few lakes or permanent rivers. Most areas are drained by ephemeral watercourses called wadis , which are dry except during the rainy season. Plentiful ancient aquifers exist beneath much of the peninsula, however, and where this water surfaces, oases form (e.g. Al-Hasa and Qatif , two of the world's largest oases ) and permit agriculture, especially palm trees , which allowed

20760-432: The mountains or foothills; water is more abundant in the mountains because of orographic lifting , and excavation in the alluvial fan is relatively easy. The muqannīs follow the track of the main water courses coming from the mountains or foothills to identify evidence of subsurface water such as deep-rooted vegetation or seasonal seeps. A trial well is then dug to determine the depth of the water table and determine whether

20933-436: The native population. The four smallest states (by area), with coastlines entirely bordering the Persian Gulf, showcase the world's most extreme population growth, nearly tripling every two decades. In 2014, the estimated population of the Arabian Peninsula was 77,983,936 (including expatriates). The Arabian Peninsula is known for having one of the most uneven adult sex ratios in the world, with females in some regions (especially

21106-449: The neighborhood, gardens and fields. The streets normally parallel the jubs and their lateral branches. As a result, the cities and towns are oriented consistent with the gradient of the land; this is a practical response to efficient water distribution over varying terrain. The lower reaches of the canals are less desirable for both residences and agriculture. The water grows progressively more polluted as it passes downstream. In dry years

21279-413: The oases in the 10th century and the residents embraced Islam. The water is metered to the various users through the use of distribution weirs that meter flow to the various canals, each for a separate user. The humidity of the oases is also used to supplement the water supply to the foggara. The temperature gradient in the vertical shafts causes air to rise by natural convection, causing a draft to enter

21452-454: The origin of the qanat was a well that was turned into an artificial spring. In contrast, the origin of the spring-flow tunnel was the development of a natural spring to renew or increase flow following a recession of the water table. Secondly, the shafts essential for the construction of qanats are not essential to spring-flow tunnels. A typical town or city in Iran, and elsewhere where the qanat

21625-510: The original Urheimat of the Semitic languages by most scholars. The seventh century saw the rise of Islam as the peninsula's dominant religion. The Islamic prophet Muhammad was born in Mecca in about 570 and first began preaching in the city in 610, but migrated to Medina in 622. From there he and his companions united the tribes of Arabia under the banner of Islam and created

21798-418: The other hand, less sloped tunnels need frequent maintenance due to the problem of sedimentation. A lower downward gradient also contributes to reducing the solid contents and contamination in water. In shorter qanats the downward gradient varies between 1:1000 and 1:1500, while in longer qanats it may be almost horizontal. Such precision is routinely obtained with a spirit level and string. In cases where

21971-512: The outlet. When the qanat is still below ground, the water is drawn to the surface via wells or animal driven Persian wells . Private subterranean reservoirs could supply houses and buildings for domestic use and garden irrigation as well. Air flow from the qanat is used to cool an underground summer room ( shabestan ) found in many older houses and buildings. Downstream of the outlet, the water runs through surface canals called jubs ( jūbs ) which run downhill, with lateral branches to carry water to

22144-399: The peninsula to produce more dates than any other region in the world. In general, the climate is extremely hot and arid , although there are exceptions. Higher elevations are made temperate by their altitude, and the Arabian Sea coastline can receive cool, humid breezes in summer due to cold upwelling offshore. The peninsula has no thick forests. Desert-adapted wildlife is present throughout

22317-549: The people of the Persian Gulf. The First World War had a severe impact on the industry, but it was the economic depression of the late 1920s and early 1930s, coupled with the invention of the cultured pearl , that wiped out the trade. The remnants of the trade eventually faded away shortly after the Second World War , when the newly independent Government of India imposed heavy taxation on imported pearls. The decline of pearling resulted in extreme economic hardship in

22490-571: The presidency and the Head of the Al Maktoum family, based in Dubai, the prime ministership. All prime ministers but one have served concurrently as vice president. The federal government is composed of three branches: The UAE e-Government is the extension of the UAE federal government in its electronic form. The UAE's Council of Ministers ( Arabic : مجلس الوزراء ) is the chief executive branch of

22663-511: The prime minister of the UAE and the ruler of Dubai, died, and Sheikh Mohammed bin Rashid Al Maktoum assumed both roles. The first ever national elections were held on 16 December 2006. A number of voters chose half of the members of the Federal National Council . The UAE has largely escaped the Arab Spring , which other countries have experienced; however, 60 Emirati activists from Al Islah were apprehended for an alleged coup attempt and

22836-664: The process of selecting the qanat to be restored. In Syria, three sites were chosen based on a national inventory conducted in 2001. One of them, the Drasiah qanat of Dmeir , was completed in 2002. Selection criteria included the availability of a steady groundwater flow, social cohesion and willingness to contribute of the community using the qanat, and the existence of a functioning water-rights system. The primary applications of qanats are for irrigation, providing cattle with water, and drinking water supply. Other applications include watermills, cooling and ice storage. Watermills within

23009-537: The protection treaties by offering to pay the full costs of keeping the British Armed Forces in the Emirates. The British Labour government rejected the offer. After Labour MP Goronwy Roberts informed Sheikh Zayed of the news of British withdrawal, the nine Persian Gulf sheikhdoms attempted to form a union of Arab emirates, but by mid-1971 they were still unable to agree on terms of union even though

23182-658: The qanat (locally khettara ) is also used. On the margins of the Sahara Desert , the isolated oases of the Draa River valley and Tafilalt have relied on qanat water for irrigation since the late 14th century. In Marrakech and the Haouz plain, the qanats have been abandoned since the early 1970s, having dried up. In the Tafilaft area, half of the 400 khettaras are still in use. The 1971 Hassan Adahkil Dam 's build in

23355-419: The qanat. And misreading the soil conditions leads to collapses, which at best require extensive rework and at worst are fatal for the crew. Construction of a qanat is usually performed by a crew of 3–4 muqannīs . For a shallow qanat, one worker typically digs the horizontal shaft, one raises the excavated earth from the shaft and one distributes the excavated earth at the top. The crew typically begins from

23528-636: The region, with the exception of Yemen. The North Yemen Civil War was fought in North Yemen between royalists of the Mutawakkilite Kingdom of Yemen and factions of the Yemen Arab Republic from 1962 to 1970. The war began with a coup d'état carried out by the republican leader, Abdullah as-Sallal , which dethroned the newly crowned Muhammad al-Badr and declared Yemen a republic under his presidency. The Imam escaped to

23701-419: The region. A plateau more than 2,500 feet (760 m) high extends across much of the Arabian Peninsula. The plateau slopes eastwards from the massive, rifted escarpment along the coast of the Red Sea, to the shallow waters of the Persian Gulf. The interior is characterized by cuestas and valleys, drained by a system of wadis . A crescent of sand and gravel deserts lies to the east. There are mountains at

23874-612: The region. The Anglo-Persian Oil Company (APOC, later to become British Petroleum , or BP) had a 23.75% share in IPC. From 1935, onshore concessions to explore for oil were granted by local rulers, with APOC signing the first one on behalf of Petroleum Concessions Ltd (PCL), an associate company of IPC. APOC was prevented from developing the region alone because of the restrictions of the Red Line Agreement , which required it to operate through IPC. A number of options between PCL and

24047-558: The regional relationships. Arabs living in one of the existing districts of the Arabian peninsula, the Emirate of Hejaz , asked for a British guarantee of independence. Their proposal included all Arab lands south of a line roughly corresponding to the northern frontiers of present-day Syria and Iraq. They envisioned a new Arab state, or confederation of states, adjoining the southern Arabian Peninsula. It would have comprised Cilicia – İskenderun and Mersin , Iraq with Kuwait, Syria, Mount Lebanon Mutasarrifate , Jordan, and Palestine . In

24220-653: The rocks—are evident. David Mattingly reports foggara extending for hundreds of miles in the Garamantes area near Germa in Libya : "The channels were generally very narrow – less than 2 feet wide and 5 high – but some were several miles long, and in total some 600 foggara extended for hundreds of miles underground. The channels were dug out and maintained using a series of regularly spaced vertical shafts, one every 30 feet or so, 100,000 in total, averaging 30 feet in depth, but sometimes reaching 130." In southern Morocco,

24393-606: The ruler of Abu Dhabi. BP joined with Compagnie Française des Pétroles (later Total ) to form operating companies, Abu Dhabi Marine Areas Ltd (ADMA) and Dubai Marine Areas Ltd (DUMA). A number of undersea oil surveys were carried out, including one led by the famous marine explorer Jacques Cousteau . In 1958, a floating platform rig was towed from Hamburg , Germany , and positioned over the Umm Shaif pearl bed, in Abu Dhabi waters, where drilling began. In March, it struck oil in

24566-468: The ruler of Dubai, was able to invest the revenues from the limited reserves found to spark the diversification drive that would create the modern global city of Dubai. By 1966, it had become clear that the British government could no longer afford to administer and protect the Trucial States , what is now the United Arab Emirates. British Members of Parliament (MPs) debated the preparedness of

24739-493: The rulers of individual emirates. The title is used due to the sheikhdom styled governing system in adherence to the culture of tribes of Arabia , where Sheikh means leader, elder, or the tribal chief of the clan who partakes in shared decision making with his followers. The president and vice president are elected by the Federal Supreme Council . Usually, the Head of the Al Nahyan family, who are based in Abu Dhabi, holds

24912-786: The ruling Ottoman Empire and creating a single unified Arab state spanning from Aleppo in Syria to Aden in Yemen. During World War I, the Sharif Hussein entered into an alliance with the United Kingdom and France against the Ottomans in June 1916. These events were followed by the foundation of Saudi Arabia under King Abdulaziz Ibn Saud . In 1902, Ibn Saud had captured Riyadh . Continuing his conquests, Abdulaziz subdued Al-Hasa, Jabal Shammar , Hejaz between 1913 and 1926 founded

25085-845: The seven rulers. The UAE joined the Arab League on 6 December 1971 and the United Nations on 9 December. It was a founding member of the Gulf Cooperation Council in May 1981, with Abu Dhabi hosting the first GCC summit . The UAE supported military operations by the US and other coalition states engaged in the war against the Taliban in Afghanistan (2001) and Saddam Hussein in Ba'athist Iraq (2003) as well as operations supporting

25258-450: The shallower the qanat, the closer the vertical shafts. If the qanat is long, excavation may begin from both ends at once. Tributary channels are sometimes also constructed to supplement the water flow. Most qanats in Iran run less than 5 km (3.1 miles), while some have been measured at ≈70 km (43 miles) in length near Kerman . The vertical shafts usually range from 20 to 200 m (66 to 656 ft) in depth, although qanats in

25431-420: The soil type, qanat liners (usually fired clay hoops) may also be required. Although the construction methods are simple, the construction of a qanat requires a detailed understanding of subterranean geology and a degree of engineering sophistication. The gradient of the qanat must be carefully controlled: too shallow a gradient yields no flow and too steep a gradient will result in excessive erosion, collapsing

25604-406: The source of water for irrigation in large oases like Gourara . The foggaras are also found at Touat (an area of Adrar 200 km from Gourara). The length of the foggaras in this region is estimated to be thousands of kilometers. Although sources suggest that the foggaras may have been in use as early as 200 CE, they were clearly in use by the 11th century after the Arabs took possession of

25777-405: The southern province of Syunik , bordering with Iran. Qanats are named kahrezes in Armenian. There are 5 kahrezes in Shvanidzor. Four of them were constructed before the village was founded. The fifth kahrez was constructed in 2005. Potable water runs through three of them, and two are in poor condition. In the summer, especially in July and August, the amount of water reaches its minimum, creating

25950-517: The southern shore of the Persian Gulf , briefly interrupted by an isolated outcrop of the Sultanate of Oman. Six of the emirates are situated along the Persian Gulf, and the seventh, Fujairah, is on the eastern coast of the peninsula with direct access to the Gulf of Oman. Most of the coast consists of salt pans that extend 8–10 km (5.0–6.2 mi) inland. The largest natural harbor is at Dubai, although other ports have been dredged at Abu Dhabi, Sharjah, and elsewhere. Numerous islands are found in

26123-431: The support of the Ottomans. Khor Al Adaid was claimed by Abu Dhabi at that time, a claim supported by the British. In 1906, the British Political Resident, Percy Cox , confirmed in writing to the ruler of Abu Dhabi, Zayed bin Khalifa Al Nahyan ('Zayed the Great'), that Khor Al Adaid belonged to his sheikhdom. During the 19th and early 20th centuries, the pearling industry thrived, providing both income and employment to

26296-431: The technique of storing ice in the middle of summer in the desert. The ice could be brought in during the winters from nearby mountains, but in a more usual and sophisticated method they built a wall in the east–west direction near a yakhchal (ice pit). In winter, the qanat water would be channeled to the north side of the wall, whose shade made the water freeze more quickly, increasing the ice formed per winter day. Then

26469-467: The term Arabistan in a broad sense for the region starting from Cilicia , where the Euphrates river makes its descent into Syria, through Palestine , and on through the remainder of the Sinai and Arabian peninsulas. The provinces of Arabia were: Al Tih, the Sinai peninsula, Hejaz, Asir, Yemen, Hadramaut, Mahra and Shilu, Oman, Hasa, Bahrain, Dahna, Nufud, the Hammad, which included the deserts of Syria, Mesopotamia and Babylonia. The Arabian Peninsula

26642-426: The territory ( the Ridda Wars ) with the Battle of Dibba in which 10,000 lives are thought to have been lost. This assured the integrity of the Caliphate and the unification of the Arabian Peninsula under the newly emerging Rashidun Caliphate . In 637, Julfar (in the area of today's Ras Al Khaimah ) was an important port that was used as a staging post for the Islamic invasion of the Sasanian Empire . The area of

26815-481: The thirty seven largest aquifers "have exceeded sustainability tipping points and are being depleted" and thirteen of them are "considered significantly distressed". Stone tools from the Middle Paleolithic age along with fossils of other animals discovered at Ti's al Ghadah, in northwestern Saudi Arabia, might imply that hominins migrated through a "Green Arabia" between 300,000 and 500,000 years ago. 200,000-year-old stone tools were discovered at Shuaib Al-Adgham in

26988-410: The trucial rulers were signed, providing useful revenue for communities experiencing poverty following the collapse of the pearl trade. However, the wealth of oil which the rulers could see from the revenues accruing to surrounding countries remained elusive. The first bore holes in Abu Dhabi were drilled by IPC's operating company, Petroleum Development (Trucial Coast) Ltd (PDTC) at Ras Sadr in 1950, with

27161-479: The undefined border with Saudi Arabia. About 100 km (62 mi) to the northeast of Liwa is the Al-Buraimi oasis, which extends on both sides of the Abu Dhabi-Oman border. Lake Zakher in Al Ain is a human-made lake near the border with Oman that was created from treated waste water. Prior to withdrawing from the area in 1971, Britain delineated the internal borders among the seven emirates in order to preempt territorial disputes that might hamper formation of

27334-533: The valleys where Quaternary sediments are deposited. Qanats are constructed as a series of well -like vertical shafts , connected by a gently sloping tunnel which carries a water canal . Qanats efficiently deliver large amounts of subterranean water to the surface without need for pumping. The water drains by gravity, typically from an upland aquifer , with the destination lower than the source. Qanats allow water to be transported over long distances in hot dry climates without much water loss to evaporation . It

27507-406: The very tip of Arabia by the Strait of Hormuz, and Madha are exclaves of Oman separated by the UAE. South and west of Abu Dhabi, vast, rolling sand dunes merge into the Rub al-Khali (Empty Quarter) of Saudi Arabia. The desert area of Abu Dhabi includes two important oases with adequate underground water for permanent settlements and cultivation. The extensive Liwa Oasis is in the south near

27680-401: The war in Yemen as analogous to the United States ' role in the Vietnam War . In 1990, Iraq invaded Kuwait. The invasion of Kuwait by Iraqi forces led to the 1990–91 Gulf War . Egypt, Qatar, Syria, and Saudi Arabia joined a multinational coalition that opposed Iraq. Displays of support for Iraq by Jordan and Palestine resulted in strained relations between many of the Arab states. After

27853-425: The war sank into a stalemate. Egypt's commitment to the war is considered to have been detrimental to its performance in the Six-Day War of June 1967, after which Nasser found it increasingly difficult to maintain his army's involvement and began to pull his forces out of Yemen. By 1970, King Faisal of Saudi Arabia recognized the republic and a truce was signed. Egyptian military historians refer to Egypt's role in

28026-539: The war, a so-called "Damascus Declaration" formalized an alliance for future joint Arab defensive actions between Egypt, Syria, and the GCC member states. The Arab Spring reached Yemen in January 2011. People of Yemen took to the street demonstrating against three decades of rule by President Ali Abdullah Saleh . The demonstration led to cracks in the ruling General People's Congress (GPC) and Saleh's Sanhani clan. Saleh used tactics of concession and violence to save his presidency. After numerous attempts, Saleh accepted

28199-447: The water from qanats; many populated areas are close to the areas where qanats are possible. Common variants of qanat in English include kanat , khanat , kunut , kona , konait , ghanat , ghundat . Qanāh ( قناة ) is an Arabic word that means "channel". In Persian , the words for "qanat" are kārīz (or kārēz ; كاريز ) and is derived from earlier word kāhrēz ( كاهریز ). The word qanāt ( قنات )

28372-435: The west, south, and southeast, and a 450-kilometre (280 mi) border with Oman on the southeast and northeast. The land border with Qatar in the Khor Al Adaid area is about nineteen kilometres (12 miles) in the northwest; however, it is a source of ongoing dispute . Following Britain's military departure from the UAE in 1971, and its establishment as a new state, the UAE laid claim to Iranian-occupied islands of Abu Musa and

28545-432: The world's seventh and seventh-largest , respectively. Zayed bin Sultan Al Nahyan , ruler of Abu Dhabi and the country's first president, oversaw the development of the Emirates by investing oil revenues into healthcare, education, and infrastructure. The country has the most diversified economy among the members of the Gulf Cooperation Council (GCC). In the 21st century, the UAE has become less reliant on oil and gas and

28718-453: The world's largest reserves of oil. Saudi Arabia and the UAE are economically the wealthiest in the region. Qatar, the only peninsular country in the Persian Gulf on the larger peninsula, is home to the Arabic-language television station Al Jazeera and its English-language subsidiary Al Jazeera English . Kuwait, on the border with Iraq, is an important country strategically, forming one of the main staging grounds for coalition forces mounting

28891-578: The world's largest, undestroyed and most pristine coral reefs. In addition, the organisms living in symbiosis with the Red Sea coral, the protozoa and zooxanthellae , have a unique hot weather adaptation to sudden rise (and fall) in sea water temperature. Hence, these coral reefs are not affected by coral bleaching caused by rise in temperature as elsewhere in the indopacific coral sea. The reefs are also unaffected by mass tourism and diving or other large scale human interference. The Persian gulf has suffered significant loss and degradation of coral reefs with

29064-427: Was developed in ancient Iran by the Persians sometime in the early 1st millennium BCE and slowly spread westward and eastward from there. Other sources suggest a Southeast Arabian origin. Analogous systems appear to have been developed independently in China and in South America (specifically, southern Peru ). A cotton species, Gossypium arboreum , is indigenous to South Asia and has been cultivated on

29237-418: Was headquartered in Syria , which included Palestine, the Transjordan region in addition to Lebanon ( Mount Lebanon was, however, a semi-autonomous mutasarrifate ). It was put in charge of Syria, Cilicia, Iraq, and the remainder of the Arabian Peninsula. The Ottomans never had any control over central Arabia, also known as the Najd region. The emergence of what was to become the Saudi royal family, known as

29410-434: Was opened throughout the Islamic world to fund the construction. The railway was to be a waqf , an inalienable religious endowment or charitable trust. The major developments of the early 20th century were the Arab Revolt during World War I and the subsequent collapse and partitioning of the Ottoman Empire . The Arab Revolt (1916–1918) was initiated by the Sherif Hussein ibn Ali with the aim of securing independence from

29583-428: Was recorded in the UAE for the first time, in the Jebel Jais mountain cluster in Ras al-Khaimah. A few years later, there were more sightings of snow and hail. The Jebel Jais mountain cluster has experienced snow only twice since records began. The United Arab Emirates is a federal constitutional monarchy made up from a federation of seven hereditary tribal monarchy -styled political units called Sheikhdoms . It

29756-419: Was signed in 1843 and in 1853, the Perpetual Maritime Truce was agreed. To this was added the 'Exclusive Agreements', signed in 1892, which made the Trucial States a British protectorate. Under the 1892 treaty, the trucial sheikhs agreed not to dispose of any territory except to the British and not to enter into relationships with any foreign government other than the British without their consent. In return,

29929-404: Was to avenge a recent defeat by Byzantine (or Eastern Roman Empire ) forces, although he first had to put down a rebellion by Arab tribes in an episode known as the Ridda wars , or "Wars of Apostasy". On his death in 634, he was succeeded by Umar as caliph, followed by Uthman ibn al-Affan and Ali ibn Abi Talib . The period of these first four caliphs is known as al-khulafā' ar-rāshidūn :

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