1.
Jolfa, Iran (city)
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Jolfa is a city in and capital of Jolfa County, East Azerbaijan Province, Iran. At the 2006 census, its population was 4,983, Jolfa is located to the north of Tabriz, separated by the Aras River from its northern neighbor and namesake, the town of Julfa in the Republic of Azerbaijan. Some 18,000 students study in the schools and 450 students attend the universities from all over the country. The employed population of the city work in service, administrative, transport, customs, banks and insurance as well as in other trade, the majority of the rural population are farmers. With the increasing level of education and the popularity of mechanical agriculture, there are increasing numbers of young, Jolfa is one of the most important border towns for the Islamic Republic of Iran. Prior to the collapse of the Soviet Union, all imports and exports of Iran with the USSR, Eastern Europe and Scandinavia were primarily carried out through Jolfa. During the year 1990 and 1991 the volume of cargo exchanges through the Jolfa border amounted to 2.69 and 2.37 million tons respectively, forming over 10 percent of the countrys imports. After the closing of the Caucasus-Jolfa railway due to the dispute over the region of Nagorno-Karabakh between Armenia and Azerbaijan, cargo exchanges through this border dropped sharply. However, in recent years, an average of 150,000 tons of cargo have been cleared from Jolfa border to Turkey, Azerbaijan Republic, Armenia. Saint Stepanos Monastery Jolfa Water Mill Chapel of Chupan Moein Ghorbani
2.
Iran
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Iran, also known as Persia, officially the Islamic Republic of Iran, is a sovereign state in Western Asia. Comprising a land area of 1,648,195 km2, it is the second-largest country in the Middle East, with 82.8 million inhabitants, Iran is the worlds 17th-most-populous country. It is the country with both a Caspian Sea and an Indian Ocean coastline. The countrys central location in Eurasia and Western Asia, and its proximity to the Strait of Hormuz, Tehran is the countrys capital and largest city, as well as its leading economic and cultural center. Iran is the site of to one of the worlds oldest civilizations, the area was first unified by the Iranian Medes in 625 BC, who became the dominant cultural and political power in the region. The empire collapsed in 330 BC following the conquests of Alexander the Great, under the Sassanid Dynasty, Iran again became one of the leading powers in the world for the next four centuries. Beginning in 633 AD, Arabs conquered Iran and largely displaced the indigenous faiths of Manichaeism and Zoroastrianism by Islam, Iran became a major contributor to the Islamic Golden Age that followed, producing many influential scientists, scholars, artists, and thinkers. During the 18th century, Iran reached its greatest territorial extent since the Sassanid Empire, through the late 18th and 19th centuries, a series of conflicts with Russia led to significant territorial losses and the erosion of sovereignty. Popular unrest culminated in the Persian Constitutional Revolution of 1906, which established a monarchy and the countrys first legislative body. Following a coup instigated by the U. K. Growing dissent against foreign influence and political repression led to the 1979 Revolution, Irans rich cultural legacy is reflected in part by its 21 UNESCO World Heritage Sites, the third-largest number in Asia and 11th-largest in the world. Iran is a member of the UN, ECO, NAM, OIC. Its political system is based on the 1979 Constitution which combines elements of a democracy with a theocracy governed by Islamic jurists under the concept of a Supreme Leadership. A multicultural country comprising numerous ethnic and linguistic groups, most inhabitants are Shia Muslims, the largest ethnic groups in Iran are the Persians, Azeris, Kurds and Lurs. Historically, Iran has been referred to as Persia by the West, due mainly to the writings of Greek historians who called Iran Persis, meaning land of the Persians. As the most extensive interactions the Ancient Greeks had with any outsider was with the Persians, however, Persis was originally referred to a region settled by Persians in the west shore of Lake Urmia, in the 9th century BC. The settlement was then shifted to the end of the Zagros Mountains. In 1935, Reza Shah requested the international community to refer to the country by its native name, opposition to the name change led to the reversal of the decision, and Professor Ehsan Yarshater, editor of Encyclopædia Iranica, propagated a move to use Persia and Iran interchangeably
3.
Azerbaijan
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Azerbaijan, officially the Republic of Azerbaijan, is a country in the South Caucasus region, situated at the crossroads of Southwest Asia and Southeastern Europe. It is bound by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west and Iran to the south. The exclave of Nakhchivan is bound by Armenia to the north and east, Iran to the south and west, the Azerbaijan Democratic Republic proclaimed its independence in 1918 and became the first democratic state in the Muslim orient world. The country was incorporated into the Soviet Union in 1920 as the Azerbaijan Soviet Socialist Republic, the modern Republic of Azerbaijan proclaimed its independence on 30 August 1991, prior to the official dissolution of the USSR in December 1991. In September 1991, the Armenian majority of the disputed Nagorno-Karabakh region seceded to form the Nagorno-Karabakh Republic, the region and seven adjacent districts outside it became de facto independent with the end of the Nagorno-Karabakh War in 1994. These regions are recognized as part of Azerbaijan pending a solution to the status of the Nagorno-Karabakh. Azerbaijan is a unitary semi-presidential republic, the country is a member state of the Council of Europe, the OSCE and the NATO Partnership for Peace program. It is one of six independent Turkic states, a member of the Turkic Council. Azerbaijan has diplomatic relations with 158 countries and holds membership in 38 international organizations and it is one of the founding members of GUAM, the Commonwealth of Independent States and the Organization for the Prohibition of Chemical Weapons. Its term of office began on 19 June 2006, Azerbaijan is also a member state of the Non-Aligned Movement, holds observer status in World Trade Organization and is a correspondent at the International Telecommunication Union. The Constitution of Azerbaijan does not declare an official religion and all political forces in the country are secularist. However, the majority of the population are of a Shiite Muslim background, Azerbaijan has a high level of human development which ranks on par with most Eastern European countries. It has a rate of economic development and literacy, as well as a low rate of unemployment. According to the Davos World Economic Forum, Azerbaijans economy has scored 37th place within 138 countries in 2016, Global Competitiveness Index 2015 indicates that Azerbaijan scores highest in its region. ASAN services, established with Presidential Decree, are known for eliminating bribery. ASAN Service has been awarded with United Nations Public Service Award 2015, the ruling party, the New Azerbaijan Party, has been accused of authoritarianism and human rights abuses. The original etymology of name is thought to have its roots in the once-dominant Zoroastrianism. In the Avesta, Frawardin Yasht, there is a mention of âterepâtahe ashaonô fravashîm ýazamaide, the name Atropates itself is the Greek transliteration of an Old Iranian, probably Median, compounded name with the meaning Protected by the Fire or The Land of the Fire
4.
Nakhchivan (city)
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The city of Nakhchivan is the capital of the eponymous Nakhchivan Autonomous Republic of Azerbaijan, located 450 km west of Baku. The municipality of Nakhchivan consists of the city of Nakhchivan, the settlement of Əliabad and the villages of Başbaşı, Bulqan, Haciniyyət, Qaraçuq, Qaraxanbəyli, Tumbul, Qarağalıq, and Daşduz. It is spread over the foothills of Zangezur Mountains, on the bank of the Nakhchivan River at an altitude of 873 m above sea level. Armenian tradition claims Noah as the founder of Nakhichevan, and a mound of earth in the city is visited by many pilgrims as his grave. See Tomb of Noah and Noah’s Mausoleum and it should be noted that Armenian literature of the 5th through the 10th centuries does not have an Ark story. It is not until the 13th century that the Ark legends began to appear in Armenia, Nakhchivan was one of the prominent cities of the Armenian Kingdom under the Artaxides, Arshakides and Bagratides dynasties from the 2nd century BC until the 11th century AD. Herodotus wrote that the river of Araz flows from the mountains of Matean to the country of Nakhar, according to Sebeos, the Byzantine emperor Heraclius marched through the Nakhchivan region during his campaign against the Sassanid empire in 627-628. Some Armenian chroniclers additionally state that Heraclius destroyed the town of Nakhchivan before marching on to Ganzak, a legend that the city of Nakhchivan was founded by Noah developed during the Christian-era. At the beginning of the 12th century Nakhchivan became the capital of Atabeks state, at the start of the 20th century Nakhchivan was the capital of a district of Erivan Governorate of the Russian Empire. During Nagorno-Karabakh War, the city like the region fell under a blockade. Although the city has no land connection to Azerbaijan, it has increased connections with Turkey. During 1995 to 2012, Nakhchivan has undergone redevelopment with the regions GDP rising by a multiple of 48. The city is spread over the foothills of Zangezur chain, on the bank of the Nakhchivan River at an altitude of almost 1,000 m. The floods and soil erosion spiked because of the decreased forest cover along riverbanks, as a result, reforestation projects implemented in the city to encourage tree planting. Nakhchivan has a continental climate with short but cold, snowy winters and long. Traditionally, Nakhchivan was home to industry, handicraft, shoemaking and hatmaking. These industries have largely replaced. The city has a range of cultural activities, amenities
5.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
6.
Aras Dam
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The Aras Dam is an embankment dam on the Aras River along the border of Iran and Azerbaijan. It is located downstream of Poldasht in West Azerbaijan Province, Iran and Nakhchivan City in Nakhchivan Autonomous Republic, the primary purpose of the dam is hydroelectric power production and water supply. On 11 August 1957, a protocol was signed between the Soviet Union and Iran in Tehran to construct the Aras Dam on the Aras River and this was done at a time when Azerbaijan was under Soviet control. Construction on the dam began in 1963 and it was completed in 1970, the dam was officially inaugurated on 28 June 1971 by Iranian deputy prime minister Safi Asfia and the Deputy Chairman of the Soviet Council of Ministers Mikhail Yefremov. A supplementary protocol to the agreement of 1954 between Iran and the Soviet Union was signed on 7 May 1970 in Moscow to redelimit the border along the Aras reservoir. The Aras Dam is 40 metres tall from its foundation and 34 metres tall from the riverbed and it is an embankment type with sand fill and a clay core. It is 1,026 metres long and 8 metres wide on its crest, the Araz reservoir, also known as Araz Water Junction is a large reservoir created by the Aras Dam and shared by Nakhchivan exclave of Azerbaijan Republic and Iran. At a normal elevation of 777.5 metres above sea level. The maximum storage of the reservoir is 1.75 cubic kilometres, the reservoir is 52 kilometres long and 6.1 kilometres wide. The average depth at normal levels is 18.2 metres. There are a total of four stations in Azerbaijan and Iran with four turbines. The discharge capacity of one spillway of a station is 66.5 m3/s, since opening, the reservoir has provided irrigation water for 400,000 hectares of arable land in Azerbaijan and Iran, including about 60,000 hectares in Dasht-e Moghan area. The dams power station contains four turbine-generators for a capacity of 11 megawatts each, two of the generators are on the Iranian side and the other two on the Azerbaijani side along with the dams spillway. The discharge capacity of one spillway of a station is 66.5 cubic metres per second, the total installed capacity is 44 MW
7.
Azerenerji
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Azerenergy is the largest electrical power producer in the Republic of Azerbaijan. It also maintains the largest distribution network in the country, although the regional networks are being privatized. Azerenergy was recreated as a joint stock company in 1996. The 25 MW Fuzuli Hydro Power Plant is under construction in the Fizuli Rayon near the Bash Mil canal. Majority of Azerenergy electrical generation is done at thermal power plants where fossil fuels, mostly heavy fuel oil, coal powered generation ceased in 1991. Azerenergy has no power nor geothermal generating capacity
8.
Azerbaijani language
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The language has official status in Azerbaijan and Dagestan but it does not have official status in Iranian Azerbaijan, where the majority of Azerbaijanis live. It is also spoken to varying degrees in Azerbaijani communities of Georgia and Turkey and by diaspora communities, primarily in Europe. Azerbaijani is a member of the Oghuz branch of the Turkic languages, modern literature in Azerbaijan is based on the Shirvani dialect mainly, while in Iranian Azerbaijan region it is based on the Tabrizi one. Azerbaijani evolved from the Eastern branch of Oghuz Turkic which spread to the Caucasus, in Eastern Europe, Persian and Arabic influenced the language, but Arabic words were mainly transmitted through the intermediary of literary Persian. By the beginning of the 16th century, it had become the dominant language of the region, the historical development of Azerbaijani can be divided into two major periods, early and modern. Early Azerbaijani differs from its descendant in that it contained a larger number of Persian. Early writings in Azerbaijani also demonstrate linguistic interchangeability between Oghuz and Kypchak elements in many aspects, despite major differences, they all aimed primarily at making it easy for semi-literate masses to read and understand literature. They all criticized the overuse of Persian, Arabic, and European elements in both colloquial and literary language and called for a simpler and more popular style. Despite the wide use of Azerbaijani in the Azerbaijan Soviet Socialist Republic, after independence, Azerbaijan republic decided to switch back to the Latin script. The first examples of Azerbaijani literature date to the late 1200s following the Mongol conquest and were written in Arabic script, in the 1300s Kadi Burhan al-Din, Hesenoghlu, and Imadaddin Nasimi helped to establish Azerbaiijani as a language through poetry and other literary works. In 1875 Akinchi became the first Azerbaijani newspaper to be published in the Russian Empire and it was started by Hasan bey Zardabi, a journalist and education advocate. Following the rule of the Qajar dynasty Iran was ruled by Reza Shah who banned the publication of texts in Azerbaijani, modern literature in the Republic of Azerbaijan is based on the Shirvani dialect mainly, while in Iranian Azerbaijan it is based on the Tabrizi dialect. Mohammad-Hossein Shahriar is an important figure in Azerbaijani poetry and his most important work is Heydar Babaya Salam and it is considered to be a pinnacle of Azerbaijani literature and gained popularity in the Turkic-speaking world. It was translated more than 30 languages. In the mid-19th century Azerbaijani literature was taught at schools in Baku, Ganja, Shaki, Tbilisi, since 1845, it has also been taught in the Saint Petersburg State University in Russia. Per the 1829 Caucasus School Statute, Azerbaijani was to be taught in all schools of Ganja, Shusha, Nukha, Shamakhi, Quba, Baku, Derbent, Yerevan, Nakhchivan, Akhaltsikhe. Beginning in 1834, it was introduced as a language of study in Kutaisi instead of Armenian, in 1853, Azerbaijani became a compulsory language for students of all backgrounds in all of Transcaucasia with the exception of the Tiflis Governorate. Azerbaijani is one of the Oghuz languages within the Turkic language family, the International Organization for Standardization encodes North Azerbaijani and South Azerbaijani as distinct languages
9.
Persian language
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Persian, also known by its endonym Farsi, is one of the Western Iranian languages within the Indo-Iranian branch of the Indo-European language family. It is primarily spoken in Iran, Afghanistan, and Tajikistan and it is mostly written in the Persian alphabet, a modified variant of the Arabic script. Its grammar is similar to that of many contemporary European languages, Persian gets its name from its origin at the capital of the Achaemenid Empire, Persis, hence the name Persian. A Persian-speaking person may be referred to as Persophone, there are approximately 110 million Persian speakers worldwide, with the language holding official status in Iran, Afghanistan, and Tajikistan. For centuries, Persian has also been a cultural language in other regions of Western Asia, Central Asia. It also exerted influence on Arabic, particularly Bahrani Arabic. Persian is one of the Western Iranian languages within the Indo-European family, other Western Iranian languages are the Kurdish languages, Gilaki, Mazanderani, Talysh, and Balochi. Persian is classified as a member of the Southwestern subgroup within Western Iranian along with Lari, Kumzari, in Persian, the language is known by several names, Western Persian, Parsi or Farsi has been the name used by all native speakers until the 20th century. Since the latter decades of the 20th century, for reasons, in English. Tajiki is the variety of Persian spoken in Tajikistan and Uzbekistan by the Tajiks, according to the Oxford English Dictionary, the term Persian as a language name is first attested in English in the mid-16th century. Native Iranian Persian speakers call it Fārsi, Farsi is the Arabicized form of Pārsi, subsequent to Muslim conquest of Persia, due to a lack of the phoneme /p/ in Standard Arabic. The origin of the name Farsi and the place of origin of the language which is Fars Province is the Arabicized form of Pārs, in English, this language has historically been known as Persian, though Farsi has also gained some currency. Farsi is encountered in some literature as a name for the language. In modern English the word Farsi refers to the language while Parsi describes Zoroastrians, some Persian language scholars such as Ehsan Yarshater, editor of Encyclopædia Iranica, and University of Arizona professor Kamran Talattof, have also rejected the usage of Farsi in their articles. The international language-encoding standard ISO 639-1 uses the code fa, as its system is mostly based on the local names. The more detailed standard ISO 639-3 uses the name Persian for the dialect continuum spoken across Iran and Afghanistan and this consists of the individual languages Dari and Iranian Persian. Currently, Voice of America, BBC World Service, Deutsche Welle, Radio Free Europe/Radio Liberty also includes a Tajik service and an Afghan service. This is also the case for the American Association of Teachers of Persian, The Centre for Promotion of Persian Language and Literature, Persian is an Iranian language belonging to the Indo-Iranian branch of the Indo-European family of languages
10.
Embankment dam
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An embankment dam is a large artificial dam. It is typically created by the placement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay and it has a semi-pervious waterproof natural covering for its surface and a dense, impervious core. This makes such a dam impervious to surface or seepage erosion, such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance, embankment dams come in two types, the earth-filled dam made of compacted earth, and the rock-filled dam. A cross-section of an embankment dam shows a shape like a bank, most have a central section or core composed of an impermeable material to stop water from seeping through the dam. The core can be of clay, concrete, or asphalt concrete and this dam type is a good choice for sites with wide valleys. They can be built on rock or softer soils. For a rock-fill dam, rock-fill is blasted using explosives to break the rock, additionally, the rock pieces may need to be crushed into smaller grades to get the right range of size for use in an embankment dam. The building of a dam and the filling of the reservoir behind it places a new weight on the floor, the stress of the water increases linearly with its depth. Thus the stress level of the dam must be calculated in advance of building to ensure that its break level threshold is not exceeded, overtopping or overflow of an embankment dam beyond its spillway capacity will cause its eventual failure. The erosion of the material by overtopping runoff will remove masses of material whose weight holds the dam in place. Even a small sustained overtopping flow can remove thousands of tons of soil from the mass of the dam within hours. As the mass of the dam erodes, the force exerted by the reservoir begins to move the entire structure, therefore, safety requirements for the spillway are high, and require it to be capable of containing a maximum flood stage. It is common for its specifications to be such that it can contain a five hundred year flood. Recently a number of embankment dam overtopping protection systems have been developed
11.
Aras (river)
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The Aras or Araxes is a river in and along the countries of Turkey, Armenia, Azerbaijan, and Iran. It drains the south side of the Lesser Caucasus Mountains and then joins the Kura River which drains the north side of those mountains and its total length is 1,072 kilometres. Given its length and a basin that covers an area of 102,000 square kilometres, in the classical antiquity the river was known to the Greeks as Araxes. Its modern Armenian name is Araks or Arax, historically, it was known as Yeraskh. Its Old Georgian name is Rakhsi, in other languages, it is known as Turkish, Aras, Persian, ارس, Aras, Kurdish, Erez, Azerbaijani, Araz. The Aras rises near Erzurum, Turkey and it meets with the Akhurian River southeast of Digor, flows along the closed Turkish-Armenian border, and then near a corridor that connects Turkey to Azerbaijans Nakhchivan exclave. It then flows along the Iranian-Armenian and the Iranian-Azerbaijan border, the Zangmar, Sariso, Ghotour River, Hajilar River, Kalibar River, Ilghena River, Darreh River and Balha River are the major tributaries of the Aras from the south. In Turkey the Ghareso river flows in on the left side, the Akhurian, Metsamor, Hrazdan, Azat, Vedi, Arpa, Vorotan, Voghdji and Meghri rivers flow in from the Armenian north side. The Khachin River, Okhchi River, Kuri River and Kandlan River flow in from the Azerbaijan north side, in Armenian tradition, the river is named after Arast, a great-grandson of the legendary Armenian patriarch Haik. The name was later Hellenized to Araxes and was applied to the Kura-Araxes culture, but many times it is the Volga River which is called Araxes especially in Herodotus History 1.202. The river is mentioned in the last chapter of the Aeneid VIII by Virgil, as angry at the bridge, since the Romans built a bridge over it. By some, the river Aras has been associated with the otherwise unidentified Gihon and Pishon rivers mentioned in the chapter of the Bible. In modern history, the Aras gained significance as a political boundary. Iran and the Soviet Union later built the Aras Dam on the Aras in the Poldasht area creating the Aras Reservoir, the Meghri Dam is under construction near the Armenian town of Meghri. During the Cold War, some Iranian communists escaped to USSR using this river, also Samad Behrangi, an Iranian author of childrens books, drowned in the River Aras. It is one of Turkeys two yearly active bird ringing stations, between 2006 and 2015, more than 65,000 birds of 198 species were ringed and 258 bird species were observed at this station. Fifty-five percent of the 471 bird species found in Turkey are recorded at this wetland, the number of ringed and observed 258 bird species comprises 85 percent of the 303 bird species at Iğdır Province. Seven new bird species were observed during the bird ringing activities in 2012 alone, including the raptor Shikra or Little Banded Goshawk, kuzeyDoga started the www. savearas. org campaign which has gathered over 61,500 signatures
12.
West Azerbaijan Province
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Kurdistan roughly encompasses the northwestern Zagros and the eastern Taurus mountain ranges. Contemporary use of the term refers to four parts of Kurdistan, which include southeastern Turkey, northern Syria, northern Iraq, and northwestern Iran. Iraqi Kurdistan first gained autonomous status in a 1970 agreement with the Iraqi government, there is a province by the name Kurdistan in Iran, it is not self-ruled. Kurds fighting in the Syrian Civil War were able to control of large sections of northern Syria as government forces, loyal to Bashar al-Assad. Having established their own government, they called for autonomy in a federal Syria after the war, various groups, among them the Guti, Hurrians, Mannai, and Armenians, lived in this region in antiquity. The original Mannaean homeland was situated east and south of the Lake Urmia, the region came under Persian rule during the reign of Cyrus the Great and Darius I. At its zenith, the Roman Empire ruled large Kurdish-inhabited areas, corduene became a vassal state of the Roman Republic in 66 BC and remained allied with the Romans until AD384. After 66 BC, it passed another 5 times between Rome and Persia, corduene was situated to the east of Tigranocerta, that is, to the east and south of present-day Diyarbakır in south-eastern Turkey. When the Sasanian Marzban asked Mar Abdisho about his place of origin, he replied that according to his parents, they were originally from Hazza, a village in Assyria. However they were driven out of Hazza by pagans, and settled in Tamanon. Tamanon lies just north of the modern Iraq-Turkey border, while Hazza is 12 km southwest of modern Erbil, in another passage in the same document, the region of the Khabur River is also identified as land of the Kurds. According to Al-Muqaddasi and Yaqut al-Hamawi, Tamanon was located on the south-western or southern slopes of Mount Judi, Kurdistan in the Middle Ages was a collection of semi-independent and independent states called emirates. It was nominally under indirect political or religious influence of Khalifs or Shahs, a comprehensive history of these states and their relationship with their neighbors is given in the text of Sharafnama, written by Prince Sharaf al-Din Bitlisi in 1597. The emirates included Baban, Soran, Badinan and Garmiyan in the south, Bakran, Bohtan and Badlis in the north, the earliest medieval attestation of the toponym Kurdistan is found in a 12th-century Armenian historical text by Matteos Urhayeci. He described a battle near Amid and Siverek in 1062 as to have taken place in Kurdistan, the second record occurs in the prayer from the colophon of an Armenian manuscript of the Gospels, written in 1200. A later use of the term Kurdistan is found in Empire of Trebizond documents in 1336 and in Nuzhat-al-Qulub, written by Hamdollah Mostowfi in 1340. According to Sharafkhan Bitlisi in his Sharafnama, the boundaries of the Kurdish land begin at the Strait of Hormuz in the Persian Gulf and stretch on a line to the end of Malatya. In the 16th century, after prolonged wars, Kurdish-inhabited areas were split between the Safavid and Ottoman empires, a major division of Kurdistan occurred in the aftermath of the Battle of Chaldiran in 1514, and was formalized in the 1639 Treaty of Zuhab
13.
Nakhchivan Autonomous Republic
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The Nakhchivan Autonomous Republic is a landlocked exclave of the Republic of Azerbaijan. The region covers 5,500 km2 with a population of 410,000, bordering Armenia to the east and north, Iran to the south and west, the area that is now Nakhchivan became part of the Safavid dynasty of Iran in the 16th century. In 1828, after the last Russo-Persian War and the Treaty of Turkmenchay, in June 1918, the region came under Ottoman occupation. Under the terms of the Armistice of Mudros, the Ottomans agreed to pull their troops out of the Transcaucasus to make way for British occupation at the close of the First World War. The Nakhchivan Autonomous Republic is an area of Azerbaijan, governed by its own elected legislature. The region continues to suffer from the effects of the Armenia-Azerbaijan War, the administrative capital city is Nakhchivan. Vasif Talibov has been the leader since 1995, variations of the name Nakhchivan include Nakhichevan, Naxcivan, Naxçivan, Nachidsheuan, Nakhijevan, Nakhchawan, Nakhitchevan, Nakhjavan, and Nakhdjevan. Hübschmann notes, however, that it was not known by name in antiquity. Instead, he states the name evolved to Nakhchivan from Naxčawan. The prefix Naxč derives from Naxič or Naxuč and awan is Armenian for place, Nakhchivan was also mentioned in Ptolemys Geography and by other classical writers as Naxuana. Armenian tradition says that Nakhchivan was founded by Noah, the oldest material culture artifacts found in the region date back to the Neolithic Age. The region was part of the states of Urartu and later Media and it became part of the Satrapy of Armenia under Achaemenid Persia c.521 BC. In 189 BC, Nakhchivan became part of the new Kingdom of Armenia established by Artaxias I, within the kingdom, the region of present-day Nakhchivan was part of the Ayrarat, Vaspurakan and Syunik provinces. The areas status as a trade center allowed it to prosper, as a result. According to the Armenian historian Faustus of Byzantium, when the Sassanid Persians invaded Armenia, in 428, the Armenian Arshakuni monarchy was abolished and Nakhchivan was annexed by Sassanid Persia. In 623, possession of the passed to the Byzantine Empire. It happened in the province of Gokhtan, which corresponds to Nakhchivans modern Ordubad district, in 705, after suppressing an Armenian revolt, Arab viceroy Muhammad ibn Marwan decided to eliminate the Armenian nobility. In Nakhchivan, several hundred Armenian nobles were locked up in churches and burnt, the violence caused many Armenian princes to flee to the neighboring Kingdom of Georgia or the Byzantine Empire
14.
Hydroelectricity
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Hydroelectricity is electricity produced from hydropower. In 2015 hydropower generated 16. 6% of the total electricity and 70% of all renewable electricity. Hydropower is produced in 150 countries, with the Asia-Pacific region generating 33 percent of global hydropower in 2013, China is the largest hydroelectricity producer, with 920 TWh of production in 2013, representing 16.9 percent of domestic electricity use. The cost of hydroelectricity is relatively low, making it a source of renewable electricity. The hydro station consumes no water, unlike coal or gas plants, the average cost of electricity from a hydro station larger than 10 megawatts is 3 to 5 U. S. cents per kilowatt-hour. With a dam and reservoir it is also a source of electricity since the amount produced by the station can be changed up or down very quickly to adapt to changing energy demands. Once a hydroelectric complex is constructed, the project produces no direct waste, Hydropower has been used since ancient times to grind flour and perform other tasks. In the mid-1770s, French engineer Bernard Forest de Bélidor published Architecture Hydraulique which described vertical-, by the late 19th century, the electrical generator was developed and could now be coupled with hydraulics. The growing demand for the Industrial Revolution would drive development as well, in 1878 the worlds first hydroelectric power scheme was developed at Cragside in Northumberland, England by William George Armstrong. It was used to power an arc lamp in his art gallery. The old Schoelkopf Power Station No.1 near Niagara Falls in the U. S. side began to produce electricity in 1881. The first Edison hydroelectric power station, the Vulcan Street Plant, began operating September 30,1882, in Appleton, Wisconsin, by 1886 there were 45 hydroelectric power stations in the U. S. and Canada. By 1889 there were 200 in the U. S. alone, at the beginning of the 20th century, many small hydroelectric power stations were being constructed by commercial companies in mountains near metropolitan areas. Grenoble, France held the International Exhibition of Hydropower and Tourism with over one million visitors, by 1920 as 40% of the power produced in the United States was hydroelectric, the Federal Power Act was enacted into law. The Act created the Federal Power Commission to regulate hydroelectric power stations on federal land, as the power stations became larger, their associated dams developed additional purposes to include flood control, irrigation and navigation. Federal funding became necessary for development and federally owned corporations, such as the Tennessee Valley Authority. Hydroelectric power stations continued to become larger throughout the 20th century, Hydropower was referred to as white coal for its power and plenty. Hoover Dams initial 1,345 MW power station was the worlds largest hydroelectric station in 1936
15.
Soviet Union
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The Soviet Union, officially the Union of Soviet Socialist Republics was a socialist state in Eurasia that existed from 1922 to 1991. It was nominally a union of national republics, but its government. The Soviet Union had its roots in the October Revolution of 1917 and this established the Russian Socialist Federative Soviet Republic and started the Russian Civil War between the revolutionary Reds and the counter-revolutionary Whites. In 1922, the communists were victorious, forming the Soviet Union with the unification of the Russian, Transcaucasian, Ukrainian, following Lenins death in 1924, a collective leadership and a brief power struggle, Joseph Stalin came to power in the mid-1920s. Stalin suppressed all opposition to his rule, committed the state ideology to Marxism–Leninism. As a result, the country underwent a period of rapid industrialization and collectivization which laid the foundation for its victory in World War II and postwar dominance of Eastern Europe. Shortly before World War II, Stalin signed the Molotov–Ribbentrop Pact agreeing to non-aggression with Nazi Germany, in June 1941, the Germans invaded the Soviet Union, opening the largest and bloodiest theater of war in history. Soviet war casualties accounted for the highest proportion of the conflict in the effort of acquiring the upper hand over Axis forces at battles such as Stalingrad. Soviet forces eventually captured Berlin in 1945, the territory overtaken by the Red Army became satellite states of the Eastern Bloc. The Cold War emerged by 1947 as the Soviet bloc confronted the Western states that united in the North Atlantic Treaty Organization in 1949. Following Stalins death in 1953, a period of political and economic liberalization, known as de-Stalinization and Khrushchevs Thaw, the country developed rapidly, as millions of peasants were moved into industrialized cities. The USSR took a lead in the Space Race with Sputnik 1, the first ever satellite, and Vostok 1. In the 1970s, there was a brief détente of relations with the United States, the war drained economic resources and was matched by an escalation of American military aid to Mujahideen fighters. In the mid-1980s, the last Soviet leader, Mikhail Gorbachev, sought to reform and liberalize the economy through his policies of glasnost. The goal was to preserve the Communist Party while reversing the economic stagnation, the Cold War ended during his tenure, and in 1989 Soviet satellite countries in Eastern Europe overthrew their respective communist regimes. This led to the rise of strong nationalist and separatist movements inside the USSR as well, in August 1991, a coup détat was attempted by Communist Party hardliners. It failed, with Russian President Boris Yeltsin playing a role in facing down the coup. On 25 December 1991, Gorbachev resigned and the twelve constituent republics emerged from the dissolution of the Soviet Union as independent post-Soviet states
16.
Tehran
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Tehran is the capital of Iran and Tehran Province. It is ranked 29th in the world by the population of its metropolitan area, in the Classical era, part of the present-day city of Tehran was occupied by a Median city that in the Avesta occurs as Rhaga. It was destroyed by the Mongols in the early 13th century, the capital has been moved several times throughout the history, and Tehran is the 32nd national capital of Iran. The city was the seat of the Qajars and Pahlavis, the two last imperial dynasties of Iran. It is home to historical collections, such as the royal complexes of Golestan, Sadabad. Large scale demolition and rebuilding began in the 1920s, and Tehran has been a destination for the migrations from all over Iran since the 20th century. Tabiat Bridge, which was completed in 2014, is considered the third symbol of the city. There have been plans to relocate Irans capital from Tehran to another area, due mainly to air pollution, to date, no definitive plans have been approved. A2016 survey of 230 cities by consultant Mercer ranked Tehran 203rd for quality of living, according to the Global Destinations Cities Index in 2016, Tehran is among the top ten fastest growing destinations. The origin of the name Tehran is uncertain, the settlement of Tehran dates back over 7,000 years. The present-day city of Tehran was a suburb of an important Median city that was known as Rhaga in Old Persian, in the Avestas Videvdat, Rhaga is mentioned as the twelfth sacred place created by the Ohrmazd. In Old Persian inscriptions, Rhaga appears as a province and it was a major area for the Iranian tribes of Medes and Achaemenids. From Rhaga, Darius the Great sent reinforcements to his father Hystaspes, in some Middle Persian texts, Rhaga is given as the birthplace of Zoroaster, although modern historians generally place the birth of Zoroaster in Khorasan. Derived into Modern Persian as Rey, it now as a city located towards the southern end of the modern-day city of Tehran. Mount Damavand, the highest peak of Iran, which is located near Tehran, is an important location in Ferdowsis Shahname, the long Iranian epic poem that is based on the ancient epics of Iran. It appears in the epics as the birthplace of Manuchehr, the residence of Keyumars, the place where Freydun binds the dragon fiend Aži Dahāka, during the Sassanid era, in 641, Yazdgerd III issued his last appeal to the nation from Rey, before fleeing to Khorasan. Rey was dominated by the Parthian Mihran family, and Siyavakhsh—the son of Mihran the son of Bahram Chobin—who resisted the Muslim Invasion, because of this resistance, when the Arabs captured Rey, they ordered the town to be destroyed and ordered Farrukhzad to rebuild the town anew. In the 9th century, Tehran was a well known village, but less known than the city of Rey, the medieval writer Najm od Din Razi declared the population of Rey about 500,000 before the Mongol Invasion
17.
Council of Ministers of the Soviet Union
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The Council of Ministers of the Union of Soviet Socialist Republics, was the de jure government comprising the highest executive and administrative body of the Soviet Union from 1946 until 1991. In 1946 the Council of Peoples Commissars was transformed into the Council of Ministers, the council issued declarations and instructions based on and in accordance with applicable laws, which had obligatory jurisdictional power over the territories of all republics within the Union. In 1991 the Council of Ministers was dissolved, and replaced by the newly established Cabinet of Ministers, there were seven chairmen of the Council of Ministers, in effect Premier of the Soviet Union. The Presidium of the Council of Ministers was the collective decision-making body of government, the Council of Peoples Commissars, the Soviet Government, was transformed into the Council of Ministers in March 1946 in all level of governance. At the same time The Peoples Commissariats were transformed into Ministries, malenkov lost the power struggle, and in 1955 he was demoted from his office as Chairman of the Council of Ministers. He was succeeded in his post by Nikolai Bulganin, who in turn was removed and replaced by Khrushchev because of his support for the Anti-Party Group, which had tried to oust Khrushchev in 1957. Kosygin, the Chairman of the Council of Ministers, was in charge of administration while Brezhnev. Kosygin resigned in 1980, to be succeeded by his First Deputy Chairman Nikolai Tikhonov, after five-years service, under the rules laid down by Leonid Brezhnev, Yuri Andropov and Konstantin Chernenko Tikhonov was compelled to retire by Mikhail Gorbachev on 27 September 1985. Tikhonov was succeeded by Nikolai Ryzhkov, Ryzhkov was a half-hearted reformer, and was skeptical towards the de-nationalisation and the monetary reform of 1989, however, he did support the creation of a regulated market economy. In 1991 Ryzhkov was succeeded as Premier by Valentin Pavlov, the Council of Ministers was dissolved and replaced with the newly established Cabinet of Ministers. The Council of Ministers was the head of the executive branch. The Chairman of the Council of Ministers could also recommend people who he found suitable for membership of the Council of Ministers to the Supreme Soviet, the Council of Ministers laid down its functions on each first-convocation of a newly elected Supreme Soviet. Creation of necessary organisations within the Council of Ministers in the fields of economics, socio-cultural development, the Council of Ministers could also issue decrees and resolutions and later on verify their execution. All organisations were obliged to follow the decrees and resolutions issued by the All-Union Council of Ministers, the All-Union Council also had the power to suspend all mandates and decrees issued by itself or organisations subordinate to it. The Council coordinated and directed the work of the republics and union ministries, state committees. In 1946, the All-Union Council of Peoples Commissars became the Council of Ministers, whilst Peoples Commissars and Peoples Commissariats became Ministers, Ministers were important figures in day-to-day decision-making, with 73 percent of them elected full-members of the Central Committee at the 25th Party Congress. A large number of key ministries had been eliminated and replaced by a network of regional and local sovnarkhoz under the supervision of the Supreme Soviet of the National Economy. Khrushchevs economic reform proved disastrous as it severed regional economic relations and was abandoned by the Soviet Government following Khrushchevs ousting in 1964, the year later twenty-eight industrial ministries, eleven All-union and seventeen Union ministries were reestablished
18.
Moscow
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Moscow is the capital and most populous city of Russia, with 13.2 million residents within the city limits and 17.8 million within the urban area. Moscow has the status of a Russian federal city, Moscow is a major political, economic, cultural, and scientific center of Russia and Eastern Europe, as well as the largest city entirely on the European continent. Moscow is the northernmost and coldest megacity and metropolis on Earth and it is home to the Ostankino Tower, the tallest free standing structure in Europe, the Federation Tower, the tallest skyscraper in Europe, and the Moscow International Business Center. Moscow is situated on the Moskva River in the Central Federal District of European Russia, the city is well known for its architecture, particularly its historic buildings such as Saint Basils Cathedral with its brightly colored domes. Moscow is the seat of power of the Government of Russia, being the site of the Moscow Kremlin, the Moscow Kremlin and Red Square are also one of several World Heritage Sites in the city. Both chambers of the Russian parliament also sit in the city and it is recognized as one of the citys landmarks due to the rich architecture of its 200 stations. In old Russian the word also meant a church administrative district. The demonym for a Moscow resident is москвич for male or москвичка for female, the name of the city is thought to be derived from the name of the Moskva River. There have been proposed several theories of the origin of the name of the river and its cognates include Russian, музга, muzga pool, puddle, Lithuanian, mazgoti and Latvian, mazgāt to wash, Sanskrit, majjati to drown, Latin, mergō to dip, immerse. There exist as well similar place names in Poland like Mozgawa, the original Old Russian form of the name is reconstructed as *Москы, *Mosky, hence it was one of a few Slavic ū-stem nouns. From the latter forms came the modern Russian name Москва, Moskva, in a similar manner the Latin name Moscovia has been formed, later it became a colloquial name for Russia used in Western Europe in the 16th–17th centuries. From it as well came English Muscovy, various other theories, having little or no scientific ground, are now largely rejected by contemporary linguists. The surface similarity of the name Russia with Rosh, an obscure biblical tribe or country, the oldest evidence of humans on the territory of Moscow dates from the Neolithic. Within the modern bounds of the city other late evidence was discovered, on the territory of the Kremlin, Sparrow Hills, Setun River and Kuntsevskiy forest park, etc. The earliest East Slavic tribes recorded as having expanded to the upper Volga in the 9th to 10th centuries are the Vyatichi and Krivichi, the Moskva River was incorporated as part of Rostov-Suzdal into the Kievan Rus in the 11th century. By AD1100, a settlement had appeared on the mouth of the Neglinnaya River. The first known reference to Moscow dates from 1147 as a place of Yuri Dolgoruky. At the time it was a town on the western border of Vladimir-Suzdal Principality
19.
Reservoir
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A reservoir is a storage space for fluids. These fluids may be water, hydrocarbons or gas, a reservoir usually means an enlarged natural or artificial lake, storage pond or impoundment created using a dam or lock to store water. Reservoirs can be created by controlling a stream that drains a body of water. They can also be constructed in river valleys using a dam, alternately, a reservoir can be built by excavating flat ground or constructing retaining walls and levees. Tank reservoirs store liquids or gases in storage tanks that may be elevated, at grade level, tank reservoirs for water are also called cisterns. Underground reservoirs are used to store liquids, principally either water or petroleum, a dam constructed in a valley relies on the natural topography to provide most of the basin of the reservoir. Dams are typically located at a part of a valley downstream of a natural basin. The valley sides act as walls, with the dam located at the narrowest practical point to provide strength. In many reservoir construction projects, people have to be moved and re-housed, construction of a reservoir in a valley will usually need the river to be diverted during part of the build, often through a temporary tunnel or by-pass channel. In hilly regions, reservoirs are constructed by enlarging existing lakes. Sometimes in such reservoirs the new top water level exceeds the height on one or more of the feeder streams such as at Llyn Clywedog in Mid Wales. In such cases additional side dams are required to contain the reservoir, where water is pumped or siphoned from a river of variable quality or quantity, bank-side reservoirs may be built to store the water. Such reservoirs are usually formed partly by excavation and partly by building a complete encircling bund or embankment, the water stored in such reservoirs may stay there for several months, during which time normal biological processes may substantially reduce many contaminants and almost eliminate any turbidity. The use of reservoirs also allows water abstraction to be stopped for some time. Service reservoirs store fully treated potable water close to the point of distribution, many service reservoirs are constructed as water towers, often as elevated structures on concrete pillars where the landscape is relatively flat. Other service reservoirs can be almost entirely underground, especially in hilly or mountainous country. In the United Kingdom, Thames Water has many underground reservoirs, sometimes called cisterns, built in the 1800s. A good example is the Honor Oak Reservoir in London, constructed between 1901 and 1909, when it was completed it was said to be the largest brick built underground reservoir in the world and it is still one of the largest in Europe
20.
Arable land
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Arable land is, according to one definition, land capable of being ploughed and used to grow crops. In Britain, it was contrasted with pasturable lands such as heaths which could be used for sheep-rearing. A quite different kind of definition is used by various agencies concerned with agriculture, the abandoned land resulting from shifting cultivation is not included in this category. Data for ‘Arable land’ are not meant to indicate the amount of land that is potentially cultivable, a briefer definition appearing in the Eurostat glossary similarly refers to actual, rather than potential use, land worked regularly, generally under a system of crop rotation. According to Food and Agriculture Organization of the United Nations the worlds Arable land amounted to 1,407 M ha, out of a total 4,924 M ha land used for agriculture, as for year 2013. Agricultural land that is not arable according to the FAO definition above includes, Permanent crop - land that produces crops from woody vegetation, other non-arable land includes land unsuitable for any agricultural use. Although such limitations may preclude cultivation, and some will in some cases preclude any agricultural use, for example, US NRCS statistics indicate that about 59 percent of US non-federal pasture and unforested rangeland is unsuitable for cultivation, yet such land has value for grazing of livestock. Similar examples can be found in many rangeland areas elsewhere, land incapable of being cultivated for production of crops can sometimes be converted to arable land. New arable land makes more food, and can reduce starvation and this outcome also makes a country more self-sufficient and politically independent, because food importation is reduced. This process is extremely expensive. An alternative is the Seawater Greenhouse which desalinates water through evaporation and condensation using solar energy as the energy input. This technology is optimized to grow crops on land close to the sea. The people covered the islands with a layer of seaweed. Israel, The construction of desalination plants along Israels coast allowed agriculture in areas that were formerly desert. The desalination plants, which remove the salt from water, have created a new source of water for farming, drinking. Slash and burn agriculture uses nutrients in wood ash, but these expire within a few years, terra preta, fertile tropical soils created by adding charcoal. Some examples of fertile land being turned into infertile land are. Rainforest deforestation, The fertile tropical forests are converted into infertile desert land, for example, Madagascars central highland plateau has become virtually totally barren, as a result of slash-and-burn deforestation, an element of shifting cultivation practiced by many natives
21.
Spillway
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A spillway is a structure used to provide the controlled release of flows from a dam or levee into a downstream area, typically the riverbed of the dammed river itself. In the UK they may be known as overflow channels, spillways ensure that the water does not overflow and damage or destroy the dam. Floodgates and fuse plugs may be designed into spillways to regulate water flow, other uses of the term spillway include bypasses of dams or outlets of channels used during high water, and outlet channels carved through natural dams such as moraines. Water normally flows over a spillway only during flood periods – when the reservoir cannot hold the excess of water entering the reservoir over the amount used. In contrast, a tower is a structure used to release water on a regular basis for water supply, hydroelectricity generation. A spillway is located at the top of the reservoir pool, dams may also have bottom outlets with valves or gates which may be operated to release flood flow, and a few dams lack overflow spillways and rely entirely on bottom outlets. There are two types of spillways, controlled and uncontrolled. A controlled spillway has mechanical structures or gates to regulate the rate of flow and this design allows nearly the full height of the dam to be used for water storage year-round, and flood waters can be released as required by opening one or more gates. An uncontrolled spillway, in contrast, does not have gates, the rate of discharge is controlled only by the depth of water above the reservoirs spillway. Storage volume in the reservoir above the spillway crest can only be used for the storage of floodwater. In an intermediate type, normal level regulation of the reservoir is controlled by the mechanical gates, if inflow to the reservoir exceeds the gates capacity, an artificial channel called either an auxiliary or emergency spillway that is blocked by a fuse plug dike will operate. The fuse plug is designed to over-top and wash out in case of a large flood, the fuse plug concept is used where it would be very costly to build a spillway with capacity for the probable maximum flood. A chute spillway is a common and basic design which transfers water from behind the dam down a smooth decline into the river below. These are usually designed following an ogee curve, most often, they are lined on the bottom and sides with concrete to protect the dam and topography. They may have a device and some are thinner and multiply lined if space. In addition, they are not always intended to dissipate energy like stepped spillways, chute spillways can be ingrained with a baffle of concrete blocks but usually have a flip lip and/or dissipator basin which creates a hydraulic jump, protecting the toe of the dam from erosion. Stepped channels and spillways have been used for over 3,000 years, the steps produce considerable energy dissipation along the chute and reduce the size of the required downstream energy dissipation basin. Research is still active on the topic, with developments on embankment dam overflow protection systems, converging spillways
22.
International Standard Book Number
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The International Standard Book Number is a unique numeric commercial book identifier. An ISBN is assigned to each edition and variation of a book, for example, an e-book, a paperback and a hardcover edition of the same book would each have a different ISBN. The ISBN is 13 digits long if assigned on or after 1 January 2007, the method of assigning an ISBN is nation-based and varies from country to country, often depending on how large the publishing industry is within a country. The initial ISBN configuration of recognition was generated in 1967 based upon the 9-digit Standard Book Numbering created in 1966, the 10-digit ISBN format was developed by the International Organization for Standardization and was published in 1970 as international standard ISO2108. Occasionally, a book may appear without a printed ISBN if it is printed privately or the author does not follow the usual ISBN procedure, however, this can be rectified later. Another identifier, the International Standard Serial Number, identifies periodical publications such as magazines, the ISBN configuration of recognition was generated in 1967 in the United Kingdom by David Whitaker and in 1968 in the US by Emery Koltay. The 10-digit ISBN format was developed by the International Organization for Standardization and was published in 1970 as international standard ISO2108, the United Kingdom continued to use the 9-digit SBN code until 1974. The ISO on-line facility only refers back to 1978, an SBN may be converted to an ISBN by prefixing the digit 0. For example, the edition of Mr. J. G. Reeder Returns, published by Hodder in 1965, has SBN340013818 -340 indicating the publisher,01381 their serial number. This can be converted to ISBN 0-340-01381-8, the check digit does not need to be re-calculated, since 1 January 2007, ISBNs have contained 13 digits, a format that is compatible with Bookland European Article Number EAN-13s. An ISBN is assigned to each edition and variation of a book, for example, an ebook, a paperback, and a hardcover edition of the same book would each have a different ISBN. The ISBN is 13 digits long if assigned on or after 1 January 2007, a 13-digit ISBN can be separated into its parts, and when this is done it is customary to separate the parts with hyphens or spaces. Separating the parts of a 10-digit ISBN is also done with either hyphens or spaces, figuring out how to correctly separate a given ISBN number is complicated, because most of the parts do not use a fixed number of digits. ISBN issuance is country-specific, in that ISBNs are issued by the ISBN registration agency that is responsible for country or territory regardless of the publication language. Some ISBN registration agencies are based in national libraries or within ministries of culture, in other cases, the ISBN registration service is provided by organisations such as bibliographic data providers that are not government funded. In Canada, ISBNs are issued at no cost with the purpose of encouraging Canadian culture. In the United Kingdom, United States, and some countries, where the service is provided by non-government-funded organisations. Australia, ISBNs are issued by the library services agency Thorpe-Bowker
