Khwarazmian Empire in the context of "Tajikistan"

Iran, officially the Islamic Republic of Iran and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the northeast, Afghanistan to the east, Pakistan to the southeast, and the Gulf of Oman and the Persian Gulf to the south. With a population of over 90 million, Iran ranks 17th globally in both geographic size and population and is the sixth-largest country in Asia. Iran is divided into five regions with 31 provinces. Tehran is the nation's capital, largest city, and financial center.

Home to one of the world's oldest continuous major civilizations, most of Iran was first united as a nation by the Medes under Cyaxares in the 7th century BC and reached its territorial height in the 6th century BC, when Cyrus the Great founded the Achaemenid Empire. Alexander the Great conquered the empire in the 4th century BC. An Iranian rebellion in the 3rd century BC established the Parthian Empire, which later liberated the country. In the 3rd century CE, the Parthians were succeeded by the Sasanian Empire, who oversaw a golden age in the history of Iranian civilization. During this period, ancient Iran saw some of the earliest developments of writing, agriculture, urbanization, religion, and administration. Once a center for Zoroastrianism, the 7th century CE Muslim conquest brought about the Islamization of Iran. Innovations in literature, philosophy, mathematics, medicine, astronomy and art were renewed during the Islamic Golden Age and Iranian Intermezzo, a period during which Iranian Muslim dynasties ended Arab rule and revived the Persian language. This era was followed by Seljuk and Khwarazmian rule, Mongol conquests and the Timurid Renaissance from the 11th to 14th centuries.

The Cumans or Kumans were a Turkic nomadic people from Central Asia comprising the western branch of the Cuman–Kipchak confederation who spoke the Cuman language. They are referred to as Polovtsians (Polovtsy) in Rus' chronicles, as "Cumans" in Western sources, and as "Kipchaks" in Eastern sources.

Related to the Pechenegs, they inhabited a shifting area north of the Black Sea and along the Volga River known as Cumania, from which the Cuman–Kipchaks meddled in the politics of the Caucasus and the Khwarazmian Empire. The Cumans were fierce and formidable nomadic warriors of the Eurasian Steppe who exerted an enduring influence on the medieval Balkans. They were numerous, culturally sophisticated, and militarily powerful.

The Mongol conquest of Persia and Mesopotamia comprised three Mongol campaigns against Islamic states in the Middle East and Central Asia between 1219 and 1258. These campaigns led to the termination of the Khwarazmian Empire, the Nizari Ismaili state, and the Abbasid Caliphate of Baghdad, and the establishment of the Mongol Ilkhanate government in their place in Persia.

Genghis Khan had unified the Mongolic peoples and conquered the Western Xia state in the late 12th and early 13th centuries. After a series of diplomatic provocations on the part of Muhammad II, the ruler of the neighbouring Khwarazmian Empire, the Mongols launched an invasion in 1219. The invaders laid waste to the Transoxianan cities of Bukhara, Samarkand, and Gurganj in turn, before obliterating the region of Khorasan, slaughtering the inhabitants of Herat, Nishapur, and Merv, three of the largest cities in the world. Muhammad died destitute on an island in the Caspian Sea. His son and successor, Jalal al-Din, tried to resist the Mongols, but was defeated and forced into exile. Genghis returned to his campaign against the Jin dynasty in 1223, only retaining governance of the northern Khwarazmian regions.

Between 1219 and 1221, the Mongol forces under Genghis Khan invaded the lands of the Khwarazmian Empire in Central Asia. The campaign, which followed the annexation of the Qara Khitai Khanate, saw widespread devastation and atrocities. The invasion marked the completion of the Mongol conquest of Central Asia, and began the Mongol conquest of Persia.

Both belligerents, although large, had been formed recently: the Khwarazmian dynasty had expanded from their homeland to replace the Seljuk Empire in the late 1100s and early 1200s; nearly simultaneously, Genghis Khan had unified the Mongolic peoples and conquered the Western Xia dynasty. Although relations were initially cordial, Genghis was angered by a series of diplomatic provocations. When a senior Mongol diplomat was executed by Khwarazmshah Muhammed II, the Khan mobilized his forces, estimated to be between 90,000 and 200,000 men, and invaded. The Shah's forces were widely dispersed and probably outnumbered—realizing his disadvantage, he decided to garrison his cities individually to bog the Mongols down. However, through excellent organization and planning, the Mongols were able to isolate and conquer the Transoxianan cities of Bukhara, Samarkand, and Gurganj. Genghis and his youngest son Tolui then laid waste to Khorasan, destroying Herat, Nishapur, and Merv, three of the largest cities in the world. Meanwhile, Muhammed II was forced into flight by the forces of Mongol generals Subutai and Jebe; unable to reach any bastions of support, he died destitute on an island in the Caspian Sea. His son and heir Jalal-al Din managed to mobilize substantial forces, defeating a Mongol general at the Battle of Parwan, but these were crushed by Genghis at the Battle of the Indus a few months later.

The Ghurid dynasty (also spelled Ghorids; Persian: دودمان غوریان, romanized: Dudmân-e Ğurīyân; self-designation: شنسبانی, Šansabānī) was a culturally Persianate dynasty of eastern Iranian Tajik origin, which ruled from the 8th-century in the region of Ghor, and became an Empire from 1175 to 1215. The Ghurids were centered in the hills of the Ghor region in the present-day central Afghanistan, where they initially started out as local chiefs. They gradually converted to Sunni Islam after the conquest of Ghor by the Ghaznavid ruler Mahmud of Ghazni in 1011. The Ghurids eventually overran the Ghaznavids when Muhammad of Ghor seized Lahore and expelled the Ghaznavids from their last stronghold.

The Ghurids initially ruled as vassals of the Ghaznavids and later of the Seljuks. However, during the early 12th-century the long-standing rivalry between the Seljuks and Ghaznavids created a power vacuum in eastern Afghanistan and Panjab which the Ghurids took advantage of and began their territorial expansion. Ala al-Din Husayn ended the Ghurid subordination to the Ghaznavids, ruthlessly sacking their capital, although he was soon defeated by the Seljuks after he stopped paying tribute to them. The Seljuk imperial power, however, was itself swept away in eastern Iran with the contemporaneous advent of the Khwarazmian Empire.

The Kara-Khanid Khanate (Persian: قراخانیان, romanized: Qarākhāniyān; Chinese: 喀喇汗國; pinyin: Kālā Hánguó), also known as the Karakhanids, Qarakhanids, Ilek Khanids or the Afrasiabids (Persian: آل افراسیاب, romanized: Āl-i Afrāsiyāb, lit. 'House of Afrasiab'), was a Karluk Turkic khanate that ruled Central Asia from the 9th to the early 13th century. The dynastic names of Karakhanids and Ilek Khanids refer to royal titles with Kara Khagan being the most important Turkic title up until the end of the dynasty.

The Khanate conquered Transoxiana in Central Asia and ruled it independently between 999 and 1089. Their arrival in Transoxiana signaled a definitive shift from Iranic to Turkic predominance in Central Asia, yet the Kara-khanids gradually assimilated the Perso-Arab Muslim culture, while retaining some of their native Turkic culture. The Khanate split into the Eastern and Western Khanates in the 1040s. In the late 11th century, they came under the suzerainty of the Seljuk Empire followed by the Qara Khitai (Western Liao dynasty) who defeated the Seljuks in the Battle of Qatwan in 1141. The Eastern Khanate ended in 1211, and the Western Khanate was extinguished by the Khwarazmian Empire in 1212.