Khorasan
Khorasan is a historical eastern region in the Iranian Plateau in West and Central Asia that encompasses western and northern Afghanistan, northeastern Iran, the eastern halves of Turkmenistan and Uzbekistan, western Tajikistan, and portions of Kyrgyzstan and Kazakhstan.
The extent of the region referred to as Khorasan varied over time. In its stricter historical sense, it comprised the present territories of northeastern Iran, parts of Afghanistan and southern parts of Central Asia, extending as far as the Amu Darya river. However, the name has often been used in a loose sense to include a wider region that included most of Transoxiana, extended westward to the Caspian coast and to the Dasht-e Kavir southward to Sistan, and eastward to the Pamir Mountains. Greater Khorasan is today sometimes used to distinguish the larger historical region from the former Khorasan Province of Iran, which roughly encompassed the western portion of the historical Greater Khorasan.
In recent scholarship, Greater Khorasan refers to an extensive interaction sphere in Central Asia during the Middle and Late Bronze Age. The emergence of complex societies during this period is observed especially during 2400–1500 BCE in southern Central Asia. Thus, the rise of the Greater Khorasan Civilization of Bronze Age is being considered.
But this interaction sphere of Central Asia goes back even further as far as the early fourth millennium BCE, for example at important sites such as Tepe Hissar in northeastern Iran.
The name Khorāsān is Persian. The name was first given to the eastern province of Persia during the Sasanian Empire and was used from the late Middle Ages in distinction to neighbouring Transoxiana. The Sassanian name Xwarāsān has in turn been argued to be a calque of the Bactrian name of the region, Miirosan, which had the same meaning 'sunrise, east'. The province was often subdivided into four quarters, such that Nishapur, Marv, Herat and Balkh were the centers, respectively, of the westernmost, northernmost, central, and easternmost quarters.
Khorasan was first established as an administrative division in the 6th century by the Sasanians, during the reign of Kavad I or Khosrow I, and comprised the eastern and northeastern parts of the empire. The use of Bactrian Miirosan 'the east' as an administrative designation under Alkhan rulers in the same region is possibly the forerunner of the Sasanian administrative division of Khurasan, occurring after their takeover of Hephthalite territories south of the Oxus. The transformation of the term and its identification with a larger region is thus a development of the late Sasanian and early Islamic periods. Early Islamic usage often regarded everywhere east of Jibal or what was subsequently termed Iraq Ajami, as being included in a vast and loosely defined region of Khorasan, which might even extend to the Indus Valley and the Pamir Mountains. The boundary between these two was the region surrounding the cities of Gurgan and Qumis. In particular, the Ghaznavids, Seljuqs and Timurids divided their empires into Iraqi and Khorasani regions. Khorasan is believed to have been bounded in the southwest by desert and the town of Tabas, known as "the Gate of Khorasan", from which it extended eastward to the mountains of central Afghanistan. Sources from the 10th century onwards refer to areas in the south of the Hindu Kush as the Khorasan Marches, forming a frontier region between Khorasan and Hindustan.
Geography
First established in the 6th century as one of four administrative divisions by the Sasanian Empire, the scope of the region has varied considerably during its nearly 1,500-year history. Initially, the Khorasan division of the Sasanian Empire covered the northeastern military gains of the empire, at its height including cities such as Nishapur, Herat, Merv, Faryab, Taloqan, Balkh, Bukhara, Badghis, Abiward, Gharjistan, Tus and Sarakhs.With the rise of the Umayyad Caliphate, the designation was inherited and likewise stretched as far as their military gains in the east, starting off with the military installations at Nishapur and Merv, slowly expanding eastwards into Tokharistan and Sogdia. Under the Caliphs, Khorasan was the name of one of the three political zones under their dominion. Under the Umayyad and Abbasid caliphates, Khorasan was divided into four major sections or quarters, each section based on a single major city: Nishapur, Merv, Herat and Balkh. By the 10th century, Ibn Khordadbeh and the Hudud al-'Alam mentions what roughly encompasses the previous regions of Abarshahr, Tokharistan and Sogdia as Khwarasan proper. They further report the southern part of the Hindu Kush, i.e. the regions of Sistan, Rukhkhudh, Zabulistan and Kabul etc. to make up the Khorasan ''marches, a frontier region between Khorasan and Hindustan.File:Map of Afghanistan during the Safavid and Moghul Empire.jpg|300px|thumb|A map of Persia by Emanuel Bowen showing the names of territories during the Persian Safavid dynasty and Mughal Empire of India By the late Middle Ages, the term lost its administrative significance, in the west only being loosely applied among the Turko-Persian dynasties of modern Iran to all its territories that lay east and north-east of the Dasht-e Kavir desert. It was therefore subjected to constant change, as the size of their empires changed. In the east, Khwarasan likewise became a term associated with the great urban centers of Central Asia. It is mentioned in the Baburnama that:
In modern times, the term has been source of great nostalgia and nationalism, especially amongst the Tajiks of Central Asia. Many Tajiks regard Khorasan as an integral part of their national identity, which has preserved an interest in the term, including its meaning and cultural significance, both in common discussion and academia, despite its falling out of political use in the region.
According to Afghan historian Ghulam Mohammad Ghobar, Afghanistan's current Persian-speaking territories formed the major portion of Khorasān, as two of the four main capitals of Khorasān are now located in Afghanistan. Ghobar uses the terms "Proper Khorasan" and "Improper Khorasan" in his book to distinguish between the usage of Khorasān in its strict sense and its usage in a loose sense. According to him, Proper Khorasan contained regions lying between Balkh in the east, Merv in the north, Sistan in the south, Nishapur in the west and Herat, known as the Pearl of Khorasan'', in the center. Improper Khorasan's boundaries extended to as far as Hazarajat and Kabul in the east, Baluchistan in the south, Transoxiana and Khwarezm in the north, and Damghan and Gorgan in the west.
History
Ancient era
During the Sasanian era, likely in the reign of Khusrow I, Persia was divided into four regions, Khwārvarān in the west, apāxtar in the north, nīmrūz in the south and Khorasan in the east. Since the Sasanian territories were more or less remained stable up to Islamic conquests, it can be concluded that Sasanian Khorasan was bordered to the south by Sistan and Kerman, to the west by the central deserts of modern Iran, and to the east by China and India.In the Sasanian era, Khorasan was further divided into four smaller regions, and each region was ruled by a marzban. These four regions were Nishapur, Marv, Herat and Balkh.
File:Madan Turquoise Mines.jpg|thumb|An early turquoise mine in the Madan village of Khorasan during the early 20th century
Khorasan in the east saw some conflict with the Hephthalites who became the new rulers in the area but the borders remained stable. Being the eastern parts of the Sassanids and further away from Arabia, Khorasan region was conquered after the remaining Persia. The last Sassanid king of Persia, Yazdgerd III, moved the throne to Khorasan following the Arab invasion in the western parts of the empire. After the assassination of the king, Khorasan was conquered by Arab Muslims in 647 AD. Like other provinces of Persia it became a province of the Umayyad Caliphate.
Medieval era
The first movement against the Arab conquest was led by Abu Muslim Khorasani between 747 and 750. Originally from Isfahan, scholars believe Abu Muslim was probably Persian. It's possible he may have been born a slave. According to the ancient Persian historian Al-Shahrastani, he was a Kaysanite. This revolutionary Shi'a movement rejected the three Caliphs that had preceded Ali.Abu Muslim helped the Abbasids come to power but was later killed by Al-Mansur, an Abbasid Caliph. The first kingdom independent from Arab rule was established in Khorasan by Tahir Phoshanji in 821, but it seems that it was more a matter of political and territorial gain. Tahir had helped the Caliph subdue other nationalistic movements in other parts of Persia such as Maziar's movement in Tabaristan.
Other major independent dynasties who ruled over Khorasan were the Saffarids from Zaranj, Samanids from Bukhara, Ghaznavids from Ghazni, Seljuqs, Khwarezmids, Ghurids, and Timurids. In 1221, Genghis Khan's son Tolui oversaw the Mongol subjugation of Khorasan, carrying out the task "with a thoroughness from which that region has never recovered."
Throughout the nineteenth and twentieth century, the majority of Islamic archaeological efforts were focused on the medieval era, predominantly in areas near what is today Central Asia.