1.
Abbasid Caliphate
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The Abbasid Caliphate was the third of the Islamic caliphates to succeed the Islamic prophet Muhammad. The Abbasid dynasty descended from Muhammads youngest uncle, Abbas ibn Abd al-Muttalib and they ruled as caliphs, for most of their period from their capital in Baghdad in modern-day Iraq, after assuming authority over the Muslim empire from the Umayyads in 750 CE. The Abbasid caliphate first centered its government in Kufa, but in 762 the caliph Al-Mansur founded the city of Baghdad, the political power of the caliphs largely ended with the rise of the Buyids and the Seljuq Turks. Although Abbasid leadership over the vast Islamic empire was reduced to a ceremonial religious function. The capital city of Baghdad became a center of science, culture, philosophy and this period of cultural fruition ended in 1258 with the sack of Baghdad by the Mongols under Hulagu Khan. The Abbasid line of rulers, and Muslim culture in general, though lacking in political power, the dynasty continued to claim authority in religious matters until after the Ottoman conquest of Egypt. The Abbasid caliphs were Arabs descended from Abbas ibn Abd al-Muttalib, one of the youngest uncles of Muhammad, the Abbasids claimed to be the true successors of Prophet Muhammad in replacing the Umayyad descendants of Banu Umayya by virtue of their closer bloodline to Muhammad. The Abbasids also distinguished themselves from the Umayyads by attacking their moral character, according to Ira Lapidus, The Abbasid revolt was supported largely by Arabs, mainly the aggrieved settlers of Marw with the addition of the Yemeni faction and their Mawali. The Abbasids also appealed to non-Arab Muslims, known as mawali, Muhammad ibn Ali, a great-grandson of Abbas, began to campaign for the return of power to the family of Prophet Muhammad, the Hashimites, in Persia during the reign of Umar II. During the reign of Marwan II, this culminated in the rebellion of Ibrahim the Imam. On 9 June 747, Abu Muslim successfully initiated a revolt against Umayyad rule. Close to 10,000 soldiers were under Abu Muslims command when the hostilities began in Merv. General Qahtaba followed the fleeing governor Nasr ibn Sayyar west defeating the Umayyads at the Battle of Nishapur, the Battle of Gorgan, after this loss, Marwan fled to Egypt, where he was subsequently assassinated. The remainder of his family, barring one male, were also eliminated, immediately after their victory, As-Saffah sent his forces to Central Asia, where his forces fought against Tang expansion during the Battle of Talas. Barmakids, who were instrumental in building Baghdad, introduced the worlds first recorded paper mill in Baghdad, As-Saffah focused on putting down numerous rebellions in Syria and Mesopotamia. The Byzantines conducted raids during these early distractions, the first change the Abbasids, under Al-Mansur, made was to move the empires capital from Damascus, in Syria, to Baghdad in Iraq. Baghdad was established on the Tigris River in 762, a new position, that of the vizier, was also established to delegate central authority, and even greater authority was delegated to local emirs. During Al-Mansurs time control of Al-Andalus was lost, and the Shiites revolted and were defeated a year later at the Battle of Bakhamra, the Abbasids had depended heavily on the support of Persians in their overthrow of the Umayyads
2.
Iraq
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The capital, and largest city, is Baghdad. The main ethnic groups are Arabs and Kurds, others include Assyrians, Turkmen, Shabakis, Yazidis, Armenians, Mandeans, Circassians, around 95% of the countrys 36 million citizens are Muslims, with Christianity, Yarsan, Yezidism, and Mandeanism also present. The official languages of Iraq are Arabic and Kurdish, two major rivers, the Tigris and Euphrates, run south through Iraq and into the Shatt al-Arab near the Persian Gulf. These rivers provide Iraq with significant amounts of fertile land, the region between the Tigris and Euphrates rivers, historically known as Mesopotamia, is often referred to as the cradle of civilisation. It was here that mankind first began to read, write, create laws, the area has been home to successive civilisations since the 6th millennium BC. Iraq was the centre of the Akkadian, Sumerian, Assyrian and it was also part of the Median, Achaemenid, Hellenistic, Parthian, Sassanid, Roman, Rashidun, Umayyad, Abbasid, Ayyubid, Mongol, Safavid, Afsharid, and Ottoman empires. Iraqs modern borders were mostly demarcated in 1920 by the League of Nations when the Ottoman Empire was divided by the Treaty of Sèvres, Iraq was placed under the authority of the United Kingdom as the British Mandate of Mesopotamia. A monarchy was established in 1921 and the Kingdom of Iraq gained independence from Britain in 1932, in 1958, the monarchy was overthrown and the Iraqi Republic created. Iraq was controlled by the Arab Socialist Baath Party from 1968 until 2003, after an invasion by the United States and its allies in 2003, Saddam Husseins Baath Party was removed from power and multi-party parliamentary elections were held in 2005. The American presence in Iraq ended in 2011, but the Iraqi insurgency continued and intensified as fighters from the Syrian Civil War spilled into the country, the Arabic name العراق al-ʿIrāq has been in use since before the 6th century. There are several suggested origins for the name, one dates to the Sumerian city of Uruk and is thus ultimately of Sumerian origin, as Uruk was the Akkadian name for the Sumerian city of Urug, containing the Sumerian word for city, UR. An Arabic folk etymology for the name is rooted, well-watered. During the medieval period, there was a region called ʿIrāq ʿArabī for Lower Mesopotamia and ʿIrāq ʿajamī, for the region now situated in Central and Western Iran. The term historically included the south of the Hamrin Mountains. The term Sawad was also used in early Islamic times for the region of the plain of the Tigris and Euphrates rivers. In English, it is either /ɪˈrɑːk/ or /ɪˈræk/, the American Heritage Dictionary, the pronunciation /aɪˈræk/ is frequently heard in U. S. media. Since approximately 10,000 BC, Iraq was one of centres of a Caucasoid Neolithic culture where agriculture, the following Neolithic period is represented by rectangular houses. At the time of the pre-pottery Neolithic, people used vessels made of stone, gypsum, finds of obsidian tools from Anatolia are evidences of early trade relations
3.
Alluvial plain
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An alluvial plain is a largely flat landform created by the deposition of sediment over a long period of time by one or more rivers coming from highland regions, from which alluvial soil forms. As the highlands due to weathering and water flow, the sediment from the hills is transported to the lower plain. Various creeks will carry the water further to a river, lake, bay, as the sediments are deposited during flood conditions in the floodplain of a creek, the elevation of the floodplain will be raised. As this reduces the channel capacity, the creek will, over time, seek new, lower paths. These processes, over time, will form the plain. The NCSS glossary instead suggests flood plain
4.
Mesopotamia
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In the Iron Age, it was controlled by the Neo-Assyrian and Neo-Babylonian Empires. The Sumerians and Akkadians dominated Mesopotamia from the beginning of history to the fall of Babylon in 539 BC. It fell to Alexander the Great in 332 BC, and after his death, around 150 BC, Mesopotamia was under the control of the Parthian Empire. Mesopotamia became a battleground between the Romans and Parthians, with parts of Mesopotamia coming under ephemeral Roman control. In AD226, eastern part of it fell to the Sassanid Persians, division of Mesopotamia between Roman and Sassanid Empires lasted until the 7th century Muslim conquest of Persia of the Sasanian Empire and Muslim conquest of the Levant from Byzantines. A number of primarily neo-Assyrian and Christian native Mesopotamian states existed between the 1st century BC and 3rd century AD, including Adiabene, Osroene, and Hatra, Mesopotamia is the site of the earliest developments of the Neolithic Revolution from around 10,000 BC. The regional toponym Mesopotamia comes from the ancient Greek root words μέσος middle and ποταμός river and it is used throughout the Greek Septuagint to translate the Hebrew equivalent Naharaim. In the Anabasis, Mesopotamia was used to designate the land east of the Euphrates in north Syria, the Aramaic term biritum/birit narim corresponded to a similar geographical concept. The neighbouring steppes to the west of the Euphrates and the part of the Zagros Mountains are also often included under the wider term Mesopotamia. A further distinction is made between Northern or Upper Mesopotamia and Southern or Lower Mesopotamia. Upper Mesopotamia, also known as the Jazira, is the area between the Euphrates and the Tigris from their sources down to Baghdad, Lower Mesopotamia is the area from Baghdad to the Persian Gulf and includes Kuwait and parts of western Iran. In modern academic usage, the term Mesopotamia often also has a chronological connotation and it is usually used to designate the area until the Muslim conquests, with names like Syria, Jazirah, and Iraq being used to describe the region after that date. It has been argued that these later euphemisms are Eurocentric terms attributed to the region in the midst of various 19th-century Western encroachments, Mesopotamia encompasses the land between the Euphrates and Tigris rivers, both of which have their headwaters in the Armenian Highlands. Both rivers are fed by tributaries, and the entire river system drains a vast mountainous region. Overland routes in Mesopotamia usually follow the Euphrates because the banks of the Tigris are frequently steep and difficult. The climate of the region is semi-arid with a vast desert expanse in the north which gives way to a 15,000 square kilometres region of marshes, lagoons, mud flats, in the extreme south, the Euphrates and the Tigris unite and empty into the Persian Gulf. In the marshlands to the south of the area, a complex water-borne fishing culture has existed since prehistoric times, periodic breakdowns in the cultural system have occurred for a number of reasons. Alternatively, military vulnerability to invasion from marginal hill tribes or nomadic pastoralists has led to periods of trade collapse and these trends have continued to the present day in Iraq
5.
Arabian Desert
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The Arabian Desert is located in Western Asia. It is a vast desert wilderness stretching from Yemen to the Persian Gulf and Oman to Jordan and it occupies most of the Arabian Peninsula, with an area of 2,330,000 square kilometers. At its center is the Rubal-Khali, one of the largest continuous bodies of sand in the world. Gazelles, oryx, sand cats, and spiny-tailed lizards are just some of the species that survive in this extreme environment. The climate is dry, and temperatures oscillate between very high heat and seasonal night time freezes. It is part of the Deserts and xeric shrublands biome and the Palearctic ecozone and this ecoregion holds little biodiversity, although a few endemic plants grow here. Many species, such as the hyena, jackal and honey badger have become extinct in this area due to hunting, human encroachment. Other species have been successfully re-introduced, such as the sand gazelle, overgrazing by livestock, off-road driving, and human destruction of habitat are the main threats to this desert ecoregion. Detailed geological features, A corridor of sandy terrain known as the Ad-Dahna desert connects the large An-Nafud desert in the north of Saudi Arabia to the Rub Al-Khali in the south-east, the Tuwaiq escarpment is a region of 800 km arc of limestone cliffs, plateaux, and canyons. At an altitude of 1,000 metres, the rock landscapes yield the place to the Rub al Khali, vast wide of sand of the Arabian desert, the sand overlies gravel or gypsum plains and the dunes reach maximum heights of up to 250 m. The sands are predominantly silicates, composed of 80 to 90% of quartz and the feldspar, whose iron oxide-coated grains color the sands in orange, purple. Some of natural resources available in the Arabian Desert are oil, natural gas, phosphates, the Rubal-Khali has very limited floristic diversity. There are only 37 species,20 recorded in the body of the sands and 17 around the outer margins. Among these 37 species, only one or two are endemic, vegetation is very diffuse but fairly evenly distributed, with some interruptions of near sterile dunes. Some typical plants are, Calligonum crinitum on dune slopes Cornulaca arabica Cyperus conglomeratus, other widespread species are, Dipterygium glaucum Limeum arabicum Zygophyllum mandavillei. Very little trees may be found except at the outer margin, in fact, the Arabian Desert is an extension of the Sahara Desert over the Arabian peninsula. The climate is hot and dry with plenty of sunshine throughout the year. The rainfall amount is generally around 100 mm, and the driest areas can receive between 30 and 40 mm of annual rain, such dryness remains very rare throughout the desert, however
6.
Umayyad Caliphate
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The Umayyad Caliphate, also spelled Omayyad, was the second of the four major caliphates established after the death of Muhammad. This caliphate was centred on the Umayyad dynasty, hailing from Mecca, Syria remained the Umayyads main power base thereafter, and Damascus was their capital. The Umayyads continued the Muslim conquests, incorporating the Caucasus, Transoxiana, Sindh, the Maghreb and the Iberian Peninsula into the Muslim world. At its greatest extent, the Umayyad Caliphate covered 11,100,000 km2 and 62 million people, the Umayyad Caliphate was secular by nature. At the time, the Umayyad taxation and administrative practice were perceived as unjust by some Muslims, Muhammad had stated explicitly during his lifetime that Abrahamic religious groups, should be allowed to practice their own religion, provided that they paid the jizya taxation. The welfare state of both the Muslim and the poor started by Umar ibn al Khattab had also continued, financed by the zakat tax levied only on Muslims. Muawiyas wife Maysum was also a Christian, the relations between the Muslims and the Christians in the state were stable in this time. Prominent positions were held by Christians, some of whom belonged to families that had served in Byzantine governments, the employment of Christians was part of a broader policy of religious assimilation that was necessitated by the presence of large Christian populations in the conquered provinces, as in Syria. This policy also boosted Muawiyas popularity and solidified Syria as his power base, the rivalries between the Arab tribes had caused unrest in the provinces outside Syria, most notably in the Second Muslim Civil War of AD 680–692 and the Berber Revolt of 740–743. During the Second Civil War, leadership of the Umayyad clan shifted from the Sufyanid branch of the family to the Marwanid branch. A branch of the family fled across North Africa to Al-Andalus, where they established the Caliphate of Córdoba, according to tradition, the Umayyad family and Muhammad both descended from a common ancestor, Abd Manaf ibn Qusai, and they originally came from the city of Mecca. Muhammad descended from Abd Manāf via his son Hashim, while the Umayyads descended from Abd Manaf via a different son, Abd-Shams, the two families are therefore considered to be different clans of the same tribe. However Muslim Shia historians suspect that Umayya was a son of Abd Shams so he was not a blood relative of Abd Manaf ibn Qusai. Umayya was later discarded from the noble family, Sunni historians disagree with this and view Shia claims as nothing more than outright polemics due to their hostility to the Umayyad family in general. While the Umayyads and the Hashimites may have had bitterness between the two clans before Muhammad, the rivalry turned into a case of tribal animosity after the Battle of Badr. The battle saw three top leaders of the Umayyad clan killed by Hashimites in a three-on-three melee and this fueled the opposition of Abu Sufyan ibn Harb, the grandson of Umayya, to Muhammad and to Islam. Abu Sufyan sought to exterminate the adherents of the new religion by waging another battle with Muslims based in Medina only a year after the Battle of Badr and he did this to avenge the defeat at Badr. The Battle of Uhud is generally believed by scholars to be the first defeat for the Muslims, as they had incurred greater losses than the Meccans
7.
Upper Mesopotamia
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Upper Mesopotamia is the name used for the uplands and great outwash plain of northwestern Iraq, northeastern Syria and southeastern Turkey, in the northern Middle East. This region is approximately correspondent with what was Assyria from the 25th century BC through to the mid-7th century AD and it extends down the Tigris to Samarra and down the Euphrates to Hit. The Khabur River runs for over 400 km across the plain, from Turkey in the north, the major settlements are Mosul, Deir ez-Zor, Raqqa, Al Hasakah, Diyarbakır and Qamishli. The western, Syrian part, is contiguous with the Syrian Al-Hasakah Governorate and is described as Syrias breadbasket. The eastern, Iraqi part, includes and extends slightly beyond the Iraqi Ninewa Governorate, in the north it includes the Turkish provinces of Şanlıurfa, Mardin, and parts of Diyarbakır Province. The name al-Jazira has been used since the 7th century CE by Islamic sources to refer to the section of Mesopotamia. The name means island, and at one time referred to the land between the two rivers, which in Aramaic is Bit Nahren. Historically the name referred to as little as the Sinjar plain coming down from the Sinjar Mountains, in pre-Abbasid times the western and eastern boundaries seem to have fluctuated, sometimes including what is now northern Syria to the west and Adiabene in the east. Al-Jazira is characterised as an outwash or alluvial plain, quite distinct from the Syrian Desert and lower-lying central Mesopotamia, however the area includes eroded hills, the region has several parts to it. In the northwest is one of the largest salt flats in the world, further south, extending from Mosul to near Basra is a sandy desert not unlike the Empty Quarter. In the late 20th and early 21st centuries the region has been plagued by drought and this is the area where the earliest signs of agriculture and domestication of animals have been found, and thus the starting point leading to civilization and the modern world. Al-Jazirah includes the mountain Karaca Dağ in southern Turkey, where the closest relative to modern wheat still grows wild, domestication of goats and sheep followed within a few generations, but didnt become widespread for more than a millennium. Weaving and pottery followed about two years later. Further surprises followed in the 1990s with the finds of the megalithic structures at Göbekli Tepe in south-eastern Turkey. The earliest of these apparently ritual buildings are from before 9000 BC—over five thousand years older than Stonehenge—and thus the absolute oldest known megalithic structures anywhere, as far as we know today no well-established farming societies existed at the time. Farming seemed to be experimental and only a smallish supplement to continued hunting and gathering. After all, Göbekli Tepe lies just 32 km from Karaca Dağ, the questions raised by Göbekli Tepe have led to intense and creative discussions among archeologists of the Middle East. Excavations at Göbekli Tepe continues, only about 5 percent has been revealed so far, Upper Mesopotamia is the heartland of ancient Assyria, founded circa the 25th century BC
8.
Arabic
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Arabic is a Central Semitic language that was first spoken in Iron Age northwestern Arabia and is now the lingua franca of the Arab world. Arabic is also the language of 1.7 billion Muslims. It is one of six languages of the United Nations. The modern written language is derived from the language of the Quran and it is widely taught in schools and universities, and is used to varying degrees in workplaces, government, and the media. The two formal varieties are grouped together as Literary Arabic, which is the language of 26 states. Modern Standard Arabic largely follows the standards of Quranic Arabic. Much of the new vocabulary is used to denote concepts that have arisen in the post-Quranic era, Arabic has influenced many languages around the globe throughout its history. During the Middle Ages, Literary Arabic was a vehicle of culture in Europe, especially in science, mathematics. As a result, many European languages have borrowed many words from it. Many words of Arabic origin are found in ancient languages like Latin. Balkan languages, including Greek, have acquired a significant number of Arabic words through contact with Ottoman Turkish. Arabic has also borrowed words from languages including Greek and Persian in medieval times. Arabic is a Central Semitic language, closely related to the Northwest Semitic languages, the Ancient South Arabian languages, the Semitic languages changed a great deal between Proto-Semitic and the establishment of the Central Semitic languages, particularly in grammar. Innovations of the Central Semitic languages—all maintained in Arabic—include, The conversion of the suffix-conjugated stative formation into a past tense, the conversion of the prefix-conjugated preterite-tense formation into a present tense. The elimination of other prefix-conjugated mood/aspect forms in favor of new moods formed by endings attached to the prefix-conjugation forms, the development of an internal passive. These features are evidence of descent from a hypothetical ancestor. In the southwest, various Central Semitic languages both belonging to and outside of the Ancient South Arabian family were spoken and it is also believed that the ancestors of the Modern South Arabian languages were also spoken in southern Arabia at this time. To the north, in the oases of northern Hijaz, Dadanitic and Taymanitic held some prestige as inscriptional languages, in Najd and parts of western Arabia, a language known to scholars as Thamudic C is attested
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.
Clifford Edmund Bosworth
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Clifford Edmund Bosworth FBA was an English historian and Orientalist, specialising in Arabic and Iranian studies. Bosworth was born on 29 December 1928, Sheffield, Yorkshire and he received his Bachelor of Arts degree from the University of Oxford and MA and PhD degrees from the University of Edinburgh. He held permanent posts at the University of St Andrews, University of Manchester and he was a visiting professor at the University of Exeter, where he held the post since 2004. Bosworth died on 28 February 2015, Yeovil, Somerset and he is the author of hundreds of articles in academic journals and composite volumes. He was the editor of the Encyclopaedia of Islam and a consulting editor of Encyclopædia Iranica. His book The Islamic Dynasties has been translated to Arabic and Persian, the Ghaznavids, their empire in Afghanistan and Eastern Iran 994-1040, Edinburgh University Press 1963, 2nd ed. Beirut 1973, repr. The Islamic dynasties, a chronological and genealogical handbook, Edinburgh University Press 1967, Sistan under the Arabs, from the Islamic conquest to the rise of the Saffarids, IsMEO, Rome 1968. The Book of curious and entertaining information, the Lataif al-maarif of Thaālibī translated into English, Iran and Islam, in memory of the late Vladimir Minorsky, Edinburgh University Press 1971. The legacy of Islam, new edition, Clarendon Press, Oxford 1974, the mediaeval Islamic underworld, the Banu Sasan in Arabic society and literature,2 vols. The medieval history of Iran, Afghanistan and Central Asia, Variorum, Collected Studies Series, the later Ghaznavids, splendour and decay, the dynasty in Afghanistan and northern India 1040-1186, Edinburgh University Press 1977, repr. Medieval Arabic culture and administration, Variorum, Collected Studies Series, qajar Iran, political, social and cultural change 1800-1925, Edinburgh University Press 1984. The reunification of the Abbasid Caliphate, the caliphate of al-Mamun A. D. 812-833/A. H. 198-213, translated and annotated by C. E. Bosworth, SUNY Press, the caliphates of Musa al-Hadi and Harun al-Rashid A. D. 785-809/A. H. 169-193, translated and annotated by C. E. Bosworth, SUNY Press, baha al-Din al-Amili and his literary anthologies, Journal of Semitic Studies Monographs 10, Manchester 1989. Storm and stress along the frontiers of the Abbasid Caliphate. The caliphate of al-Mutasim A. D. 833-842/A. H, 218-227, translated and annotated by C. E. Bosworth, SUNY Press, Albany 1991. Richard Bell, A commentary on the Quran, University of Manchester 1991,2 vols, the History of the Saffarids of Sistan and the Maliks of Nimruz, Columbia Lectures on Iranian Studies no. 7, Costa Mesa, Calif. and New York 1994, Studies in early Islamic history and culture, Variorum, Collected Studies Series, Ashgate Publishing, Aldershot 1996
11.
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
