Showing posts with label Tamerlane. Show all posts
Showing posts with label Tamerlane. Show all posts

Monday, October 27, 2014

A Sultan's Observatory

The Ulugh Beg Observatory Museum, built in 1970
Ulugh Beg is the more familiar name of Mīrzā Muhammad Tāraghay bin Shāhrukh (22 March 1394 - 27 October 1449). "Ulugh Beg" is more of a nickname, meaning "Great Ruler."

He was a grandson of Tamerlane who became sultan in Samarkand while still a teenager. He decided to turn Samarkand into an intellectual center, building a university and inviting scholars to take up residence.

He also built the Ulugh Beg Observatory in 1420, where some of the finest Islamic astronomers worked and studied, but only those whom Ulugh personally approved. The picture here is a modern structure on the site of the original, which was destroyed by religious fanatics in 1449. An excavation uncovered its primary feature—a giant sextant:
The so-called "sextant" obviously would have extended well above the ground (as the drawing shows) and likely was closer to being a quadrant. As Krisciunas points out in his interesting discussion of the instrument, it "was by far the largest meridian instrument ever built." Fragments of the curved measuring track have survived with markings for around 20 degrees; this is about the highest point that observations likely would have been made. The "sextant" would have been used to measure the angle of elevation of major heavenly bodies, especially at the time of the winter and summer solstices. Light
from the given body, passing through a controlled opening, would have shone on the curved track, which is marked very precisely with degrees and minutes. "It could achieve a resolution of several seconds of arc--on the order of a six-hundredth of a degree, or the diameter of an American penny at a distance of more than half a kilometer" (Krisciunas). It is not clear whether more than the sun and moon could have been measured in this fashion, since planets, for example, would not have cast sufficient light. [link]
Building a giant permanent astronomical instrument was a unique idea at the time—remember that this was 200 years prior to the invention of a telescope. He created a catalog of over 1018 stars, discovering and correcting many inaccuracies in the star tables created by Ptolemy. Copies of these star charts are on display at the Ulugh Beg Observatory Museum; the originals are in the Bodleian Library in Oxford.

Wednesday, July 30, 2014

The Founding of Baghdad

The red pin is Kufa, the purple pin
is Baghdad, about 170 km north.
The Abbasids had taken over from the Umayyads, and in order to make a clear break with their predecessors, they had to make some bold changes. One was to move the capital city. The Umayyad Caliphate had as its capital Kufa, on the banks of the Euphrates. Caliph Al-Mansur (714 - 775) built an imperial palace on the banks of the Tigris, well north of Kufa, on the site of several Aramaic Christian villages. One of the villages was named Baghdad, and even though the palace and city Al-Mansur built was called Madinat as-Salam ["City of Peace"] and that name was used on coins and official documents, locally the name Baghdad continued to be used.

Although the date of its founding is accepted as 30 July 762, building Baghdad took 100,000 workers from 764 to 768. The location of the city on the Tigris was beneficial: the abundance of water throughout the city encouraged growth that allowed for all residents to have easily accessible water. By the 9th century, Baghdad had grown to be the largest city in the Middle East, with a population between 300,000 and 500,000.

The entire city complex was originally built as a circle about 19 kilometers in diameter and was nicknamed al-Mudawara ["Round city"]. The wall was built to last: it was about 44 meters thick at the base, and about 30 meters high. Al-Mansur brought together artists as well as engineers to build his capital, and the circle included parks and promenades, gardens, and a mosque at the center. The city walls had four gates called Basra, Khorasan, Kufa and Syria, named for the places that the highways from those gates led to.

Baghdad became a center of knowledge. The first university in the world is considered to be the Bayt al-Hikma ["House of Wisdom"], founded during the reign of Caliph Harun al-Rashid (786 - 809). Scholars here made it a goal to translate all Greek works available to them, which made much of Classical Era learning available to the West through Arabic translations.

The strength of the Abbasid Caliphate started to deteriorate due to religious and regional strife. A grandson of Ghengis Khan (but not Kublai, well-known to Marco Polo fans) managed to sack Baghdad in 1258, destroying much of what made it great in learning and art and religion. The city was further devastated in 1401 by Tamerlane.

Tuesday, March 4, 2014

The Crimea

The much-disputed Crimean Peninsula
On the north coast of the Black Sea, a peninsula extends from the southern part of Ukraine. If you look at enough of its history, you will find numerous occupants: Turks and Italians, Greeks and Goths, Huns and Scythians and Bulgars. One of the earliest occupants of the peninsula were the Cimmerians, an Indo-European tribe that lived there long before the Common Era, presumably driven south by the Scythians from their homeland north of the Caucasus. For a long time it was called Taurica after the Taures, a Cimmerian group. The best guess regarding the derivation of "Crimea" is that it comes from "Cimmerian."

Invasions took place throughout the Classical and Medieval Eras. A group now referred to as Crimean Tatars (descendants of the Mongols of Genghis Khan fame) thrived there in the Middle Ages. Despite their numbers, the Tatars did not always control the territory. Venice created several settlements on the coast in order to control trade on the Black Sea; these were taken over by Genoa in the 13th century and controlled by them for the next two centuries.

...and here's an interesting tie-in to one of the best-known events of the Middle Ages. The first appearance of the Black Death in medieval Europe came on twelve Genoese ships coming from the east in October 1347 and landing in Sicily. It is entirely possible that Crimean ports were the source of the Plague.

In the era of Tamerlane, the Crimean Tatars finally asserted control over most of the area—except the Genoese towns—establishing the Crimean Khanate in 1441 under the rule of a descendant of Genghis Khan. The Genoese towns were finally captured, but not by the Tatars. The Ottoman Empire conquered the Genoese towns, then took the current Crimean Khan captive. He was released after the Tatars recognized the sovereignty of the Ottomans.

In the late 1700s, a treaty between the warring Russian and Ottoman Empires left the Crimean Peninsula in the hands of Russia, one step closer to the present controversy.

Monday, April 22, 2013

Medieval Chechnya

Recent events in Boston have underscored what Americans do not know about world geography. The news that the alleged bombers were Chechen, from Chechnya, led many to link them erroneously to Czechoslovakia. Chechnya, in the North Caucasus (north of Georgia, between the Black Sea and the Caspian Sea), has a long and varied history.

The first time that the history of the area would overlap with topics dealt with by DailyMedieval is in the 13th and 14th centuries, when Mongols launched a prolonged effort to expand into Chechnya. At the time, however, it was not called "Chechnya" and was not Muslim; it was the region occupied by the Vainakh kingdom. The Vainakh were a branch of people who spoke one of the Nakh family of languages. The Nakh language is still spoken by Chechens, Ingush and Georgian Kist peoples.

Prior to the Mongol invasions, the region was influenced by Georgian Christian missionaries, although conversions were rare. They also traded with other areas cultures: Mesopotamian coins have been found, and a cache of 200 Arabian silver drahims from the 9th century. One of the effects of the Mongol invasions was the severing of easy communication with Georgia, after which Vainakh paganism re-asserted itself.

The Vainakh religion has similarities to Celtic beliefs, and some* think the Celtic Alans/Alauni might have come from the Vainakh region. Among the similarities that support a connection are veneration of trees, particularly the pine tree on the Winter Solstice, festivals at the time of Beltane and Halloween, and a wide range of gods.

Tamerlane (1336-1405) also led invasions into the region while attempting to restore the Mongol Empire of Genghis Khan. He devastated the North Caucasus. In the 15th century, while Russia began to encroach onto the territory, the local peoples converted to Sunni Islam in order to gain an ally in the Ottoman Empire and stave off Russia. There is a tradition that the word "Chechen" to refer to the inhabitants of the area comes from the village of Chechen-Aul where Russian forces were defeated in 1732. The term had been used in Russian sources 40 years earlier, however. It is likely that the name comes from Arabic sources and became common after the conversion to Islam: the term "Chechen" for these people appears in Arabic sources as far back as the 8th century.

*Jaimoukha, Amjad. The Chechens.