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Derbent Wall
The Fortifications of Derbent (''Darband'') are one of the fortified defense lines built by the Persian Sasanian Empire to protect the eastern passage of the Caucasus Mountains (the "Caspian Gates") against the attacks of the nomadic peoples of the Pontic–Caspian steppe. Built in the 6th century during the reign of Persian emperor Khosrow I and maintained by various later Arab, Turkish and Persian regimes, the fortifications comprise three distinct elements: the citadel of Naryn-Kala at Derbent, the twin long walls connecting it with the Caspian Sea in the east, and the "mountain wall" of Dagh-Bary, running from Derbent to the Caucasus foothills in the west. The immense wall, with a height of up to twenty meters and a thickness of about 10 feet (3 meters), stretched for forty kilometers between the Caspian Sea and the Caucasus Mountains, thirty north-looking towers stretched for forty kilometers between the Caspian Sea and the Caucasus Mountains, effectively blocking the passa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sasanian Defense Lines
The defense lines (or ''"limes"'') of the Sasanians were part of their military strategy and tactics. They were networks of fortifications, walls, and/or ditches built opposite the territory of the enemies. These defense lines are known from tradition and archaeological evidence. The fortress systems of the Western, Arabian, and Central Asian fronts were of both defensive and offensive functions. Mesopotamia The rivers Euphrates, Great Zab, and Little Zab acted as natural defenses for Mesopotamia (Asorestan). Sasanian development of irrigation systems in Mesopotamia further acted as water defense lines, notably the criss-crossing trunk canals in Khuzestan and the northern extension of the Nahrawan Canal, known as the ''Cut of Khusrau'', which made the Sasanian capital Ctesiphon virtually impregnable in late Sasanian period. In the early period of the Sasanian Empire, a number of buffer states existed between Persia and the Roman Empire, which played a major role in Roman-Persi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huns
The Huns were a nomadic people who lived in Central Asia, the Caucasus, and Eastern Europe between the 4th and 6th century AD. According to European tradition, they were first reported living east of the Volga River, in an area that was part of Scythia at the time; the Huns' arrival is associated with the migration westward of an Iranian people, the Alans. By 370 AD, the Huns had arrived on the Volga, and by 430, they had established a vast, if short-lived, dominion in Europe, conquering the Goths and many other Germanic peoples living outside of Roman borders and causing many others to flee into Roman territory. The Huns, especially under their King Attila, made frequent and devastating raids into the Eastern Roman Empire. In 451, they invaded the Western Roman province of Gaul, where they fought a combined army of Romans and Visigoths at the Battle of the Catalaunian Fields, and in 452, they invaded Italy. After the death of Attila in 453, the Huns ceased to be a major thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6th Century In Iran
6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. In mathematics Six is the smallest positive integer which is neither a square number nor a prime number; it is the second smallest composite number, behind 4; its proper divisors are , and . Since 6 equals the sum of its proper divisors, it is a perfect number; 6 is the smallest of the perfect numbers. It is also the smallest Granville number, or \mathcal-perfect number. As a perfect number: *6 is related to the Mersenne prime 3, since . (The next perfect number is 28.) *6 is the only even perfect number that is not the sum of successive odd cubes. *6 is the root of the 6-aliquot tree, and is itself the aliquot sum of only one other number; the square number, . Six is the only number that is both the sum and the product of three consecutive positive numbers. Unrelated to 6's being a perfect number, a Golomb ruler of length 6 is a "perfect ruler". Six is a c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Dagestan
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, monument, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the :Human habitats, human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Heritage Sites In Russia
The United Nations Educational, Scientific and Cultural Organization (UNESCO) World Heritage Sites are places of importance to cultural or natural heritage as described in the UNESCO World Heritage Convention, established in 1972. Cultural heritage consists of monuments (such as architectural works, monumental sculptures, or inscriptions), groups of buildings, and sites (including archaeological sites). Natural features (consisting of physical and biological formations), geological and physiographical formations (including habitats of threatened species of animals and plants), and natural sites which are important from the point of view of science, conservation or natural beauty, are defined as natural heritage. The Soviet Union ratified the convention on 12 October 1988. The first five sites in the Soviet Union were inscribed to the list at the 14th session of the UNESCO World Heritage Committee, held in Banff, Alberta, Canada, in December 1990. Of these five, three are located ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Border Barriers
A border barrier is a separation barrier that runs along or near an Border, international border. Such barriers are typically constructed for border control purposes such as curbing illegal immigration, human trafficking, and smuggling. Some such barriers are constructed for defence or security reasons. In cases of a List of border conflicts, disputed or Boundary delimitation, unclear border, erecting a barrier can serve as a ''de facto'' unilateral consolidation of a Territorial dispute, territorial claim that can supersede formal Boundary delimitation, delimitation. A border barrier does not usually indicate the location of the actual border, and is usually constructed unilaterally by a country, without the agreement or cooperation of the other country. Examples of border walls include the ancient Great Wall of China, a series of walls separating China from nomadic empires to the north. The construction of border barriers increased in the early 2000s; half of all the border ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walls
Walls may refer to: *The plural of wall, a structure * Walls (surname), a list of notable people with the surname Places * Walls, Louisiana, United States *Walls, Mississippi, United States * Walls, Ontario, neighborhood in Perry, Ontario, Canada *Walls, Shetland, Scotland, United Kingdom *South Walls, Orkney Islands, Scotland, United Kingdom Music *The Walls, Irish rock band * Walls (band), British electronic indie duo Albums * ''Walls'' (EP), a 2005 EP by The Red Paintings * ''Walls'' (Apparat album), 2007 * ''Walls'' (An Horse album), 2011 * ''Walls'' (Gateway Worship album), 2015 * ''Walls'' (Kings of Leon album), 2016 * ''Walls'' (Barbra Streisand album), 2018 * ''Walls'' (Louis Tomlinson album), 2020 Songs * "Walls" (Icehouse song), 1980 * "Walls" (Kings of Leon song), 2016 * "Walls" (Louis Tomlinson song), 2020 * "Walls" (Ruben song), 2017 * "Walls" (The Rocket Summer song), 2010 * "Walls" (Yes song), 1994 *"Walls (Circus)", a song by Tom Petty and the Heartbreaker ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sassanian Fortifications
The Sasanian () or Sassanid Empire, officially known as the Empire of Iranians (, ) and also referred to by historians as the Neo-Persian Empire, was the last Iranian empire before the early Muslim conquests of the 7th-8th centuries AD. Named after the House of Sasan, it endured for over four centuries, from 224 to 651 AD, making it the longest-lived Persian imperial dynasty. The Sasanian Empire succeeded the Parthian Empire, and re-established the Persians as a major power in late antiquity alongside its neighbouring arch-rival, the Roman Empire (after 395 the Byzantine Empire).Norman A. Stillman ''The Jews of Arab Lands'' pp 22 Jewish Publication Society, 1979 International Congress of Byzantine Studies ''Proceedings of the 21st International Congress of Byzantine Studies, London, 21–26 August 2006, Volumes 1–3'' pp 29. Ashgate Pub Co, 2006 The empire was founded by Ardashir I, an Iranian ruler who rose to power as Parthia weakened from internal strife and wars with th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Derbent
History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts, art and material artifacts, and ecological markers. History is not complete and still has debatable mysteries. History is also an academic discipline which uses narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians often debate which narrative best explains an event, as well as the significance of different causes and effects. Historians also debate the nature of history as an end in itself, as well as its usefulness to give perspective on the problems of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roderich Von Erckert
Roderich von Erckert (15 December 1821 – 12 December 1900) was a German ethnographer and officer. His work on the Caucasian languages The Caucasian languages comprise a large and extremely varied array of languages spoken by more than ten million people in and around the Caucasus Mountains, which lie between the Black Sea and the Caspian Sea. Linguistic comparison allows th ... includes ''Der Kaukasus und seine Völker'' (The Caucasus and Its Peoples; 1887); ''Die Sprachen des kaukasischen Stammes'' (The Languages of the Caucasian Tribes; 1895); and ''Wanderungen und Siedelungen der germanischen Stämme in Mitteleuropa'' (Migration and Settlement of the Germanic Tribes in Central Europe; 1901). Works * Russland, Carte éthnografique de l’Empire de Russie (Berlin, 1862) * Atlas ethnographique des provinces habitées en totalité ou en partie par des Polonais (St. Pétersbourg, 1863) * Der Kaukasus und seine Völker (1887) * Der Ursprung der Kosaken, vorzüglich nach neu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muslim Conquest Of Persia
The Muslim conquest of Persia, also known as the Arab conquest of Iran, was carried out by the Rashidun Caliphate from 633 to 654 AD and led to the fall of the Sasanian Empire as well as the eventual decline of the Zoroastrian religion. The rise of the Muslims in Arabia coincided with an unprecedented political, social, economic, and military weakness in Persia. Once a major world power, the Sasanian Empire had exhausted its human and material resources after decades of warfare against the Byzantine Empire. The Sasanian state's internal political situation quickly deteriorated after the execution of King Khosrow II in 628. Subsequently, ten new claimants were enthroned within the next four years.The Muslim Conquest of Persia By A.I. Akram. Ch: 1 Following the Sasanian civil war of 628–632, the empire was no longer centralized. Arab Muslims first attacked Sasanian territory in 633, when Khalid ibn al-Walid invaded Mesopotamia (then known as the Sasanian province of '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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