Contemporary political map of Central Asia
The history of Central Asia concerns the history of the 
various peoples that have inhabited Central Asia. The lifestyle of such 
people has been determined primarily by the area's climate and geography. The aridity
 of the region makes agriculture difficult and distance from the sea cut
 it off from much trade. Thus, few major cities developed in the region.
 Nomadic horse peoples of the steppe dominated the area for millennia. 
Relations between the steppe nomads and the settled people in and around Central Asia
 were marked by conflict. The nomadic lifestyle was well suited to 
warfare, and the steppe horse riders became some of the most militarily 
potent people in the world, due to the devastating techniques and 
ability of their horse archers.
 Periodically, tribal leaders or changing conditions would cause several
 tribes to organize themselves into a single military force, which would
 then often launch campaigns of conquest, especially into more 
'civilized' areas. A few of these types of tribal coalitions included 
the Huns' invasion of Europe, various Turkic migrations into Transoxiana, the Wu Hu attacks on China and most notably the Mongol conquest of much of Eurasia.
The dominance of the nomads ended in the 16th century as firearms allowed settled people to gain control of the region. The Russian Empire, the Qing dynasty of China, and other powers expanded into the area and seized the bulk of Central Asia by the end of the 19th century. After the Russian Revolution of 1917, the Soviet Union incorporated most of Central Asia; only Mongolia and Afghanistan remained nominally independent, although Mongolia existed as a Soviet satellite state and Soviet troops invaded Afghanistan in the late 20th century. The Soviet areas of Central Asia saw much industrialization
 and construction of infrastructure, but also the suppression of local 
cultures and a lasting legacy of ethnic tensions and environmental 
problems.
With the collapse of the Soviet Union in 1991, five Central Asian countries gained independence — Kazakhstan, Uzbekistan, Turkmenistan, Kyrgyzstan, and Tajikistan. In all of the new states, former Communist Party officials retained power as local strongmen.
Prehistory
Top image: The Sampul tapestry, a woolen wall hanging from Lop County, Hotan Prefecture, Xinjiang, China, showing a possibly Greek soldier from the Greco-Bactrian kingdom (250–125 BC), with blue eyes, wielding a spear, and wearing what appears to be a diadem headband; depicted above him is a centaur, from Greek mythology, a common motif in Hellenistic art
Bottom image: painted clay and alabaster head of a Zoroastrian priest wearing a distinctive Bactrian-style headdress, Takhti-Sangin, Tajikistan, 3rd–2nd century BC
Bottom image: painted clay and alabaster head of a Zoroastrian priest wearing a distinctive Bactrian-style headdress, Takhti-Sangin, Tajikistan, 3rd–2nd century BC
Anatomically modern humans (Homo sapiens) reached Central Asia by 50,000 to 40,000 years ago. 
The  Tibetan Plateau is thought to have been reached by 38,000 years ago.
Populations who lived in Siberia during the Last Glacial Maximum have also contributed significantly to the populations of both Europe and the Americas.
The term Ceramic Mesolithic is used of late Mesolithic cultures of Central Asia, during the 6th to 5th millennia BC
(in Russian archaeology,
 these cultures are described as Neolithic even though farming is 
absent).
It is characterized by its  distinctive type of pottery, with point or 
knob base and flared rims, manufactured by methods not used by the 
Neolithic farmers.  The earliest manifestation of this type of pottery 
may be in the region around Lake Baikal in Siberia. It appears in the 
Elshan or Yelshanka or Samara culture on the Volga in Russia by about 7000 BC. and from there spread via the Dnieper-Donets culture to the Narva culture of the Eastern Baltic.
In the Pontic-Caspian steppe, Chalcolithic
 cultures develop in the second half of the 5th millennium BC, 
small communities in permanent settlements which began to engage in 
agricultural practices as well as herding. Around this time, some of 
these communities began the domestication of the horse. According to the Kurgan hypothesis, the north-west of the region is also considered to be the source of the root of the Indo-European languages.
The horse-drawn chariot appears in the 3rd millennium BC, by 2000 BC, in the form of war chariots with spoked wheels,
 thus being made more maneuverable, and dominated the battlefields. The 
growing use of the horse, combined with the failure, roughly around 2000
 BC, of the always precarious irrigation systems that had allowed for 
extensive agriculture in the region, gave rise and dominance of pastoral
 nomadism by 1000 BC, a way of life that would dominate the region for the next several millennia, giving rise to the Scythian expansion of the Iron Age. 
Scattered nomadic groups maintained herds of sheep, goats, 
horses, and camels, and conducted annual migrations to find new pastures
 (a practice known as transhumance). The people lived in yurts
 (or gers) – tents made of hides and wood that could be disassembled and
 transported. Each group had several yurts, each accommodating about 
five people.
While the semi-arid plains were dominated by the nomads, small 
city-states and sedentary agrarian societies arose in the more humid 
areas of Central Asia. The Bactria-Margiana Archaeological Complex of the early 2nd millennium BC was the first sedentary civilization of the region, practicing irrigation farming of wheat and barley and possibly a form of writing. Bactria-Margiana probably interacted with the contemporary Bronze Age nomads of the Andronovo culture, the originators of the spoke-wheeled chariot,
 who lived to their north in western Siberia, Russia, and parts of 
Kazakhstan, and survived as a culture until the 1st millennium BC. These
 cultures, particularly Bactria-Margiana, have been posited as possible 
representatives of the hypothetical Aryan culture ancestral to the speakers of the Indo-Iranian languages.
Later the strongest of Sogdian city-states of the Fergana Valley rose to prominence. After the 1st century BC, these cities became home to the traders of the Silk Road
 and grew wealthy from this trade. The steppe nomads were dependent on 
these settled people for a wide array of goods that were impossible for 
transient populations to produce. The nomads traded for these when they 
could, but because they generally did not produce goods of interest to 
sedentary people, the popular alternative was to carry out raids.
A wide variety of people came to populate the steppes. Nomadic groups in Central Asia included the Huns and other Turks, as well as Indo-Europeans such as the Tocharians, Persians, Scythians, Saka, Yuezhi, Wusun, and others, and a number of Mongol
 groups. Despite these ethnic and linguistic differences, the steppe 
lifestyle led to the adoption of very similar culture across the region.
Ancient era
Tetradrachm of the Greco-Bactrian King Eucratides (171–145 BC).
A monumental Sogdian wall mural of Samarkand, dated c. 650 AD, known as the Ambassadors' Painting, found in the hall of the ruin of an aristocratic house in Afrasiab, commissioned by the Sogdian king of Samarkand, Varkhuman
Two Buddhist monks on a mural of the Bezeklik Thousand Buddha Caves near Turpan, Xinjiang, China, 9th century AD; although Albert von Le Coq (1913) assumed the blue-eyed, red-haired monk was a Tocharian, modern scholarship has identified similar Caucasian figures of the same cave temple (No. 9) as ethnic Sogdians, an Eastern Iranian people who inhabited Turfan as an ethnic minority community during the phases of Tang Chinese (7th–8th century) and Uyghur rule (9th–13th century).
In the 2nd and 1st millennia BC, a series of large and powerful states developed on the southern periphery of Central Asia (the Ancient Near East). These empires launched several attempts to conquer the steppe people but met with only mixed success. The Median Empire and Achaemenid Empire both ruled parts of Central Asia. The Xiongnu Empire (209 BC-93 (156) AD) may be seen as the first central Asian empire which set an example for later Göktürk and Mongol empires. Xiongnu's ancestor Xianyu tribe founded Zhongshan state (c. 6th century BC – c. 296 BC) in Hebei province, China. The title chanyu was used by the Xiongnu rulers before Modun Chanyu so it is possible that statehood history of the Xiongnu began long before Modun's rule.
Following the success of the Han–Xiongnu War,
 Chinese states would also regularly strive to extend their power 
westwards. Despite their military might, these states found it difficult
 to conquer the whole region.
When faced by a stronger force, the nomads could simply retreat 
deep into the steppe and wait for the invaders to leave. With no cities 
and little wealth other than the herds they took with them, the nomads 
had nothing they could be forced to defend. An example of this is given 
by Herodotus's detailed account of the futile Persian campaigns against the Scythians. The Scythians, like most nomad empires, had permanent settlements of various sizes, representing various degrees of civilisation. The vast fortified settlement of Kamenka on the Dnieper River, settled since the end of the 5th century BC, became the centre of the Scythian kingdom ruled by Ateas, who lost his life in a battle against Philip II of Macedon in 339 BC.
Some empires, such as the Persian and Macedonian empires, did make deep inroads into Central Asia by founding cities and gaining control of the trading centres. Alexander the Great's conquests spread Hellenistic civilisation all the way to Alexandria Eschate
 (Lit. “Alexandria the Furthest”), established in 329 BC in modern 
Tajikistan. After Alexander's death in 323 BC, his Central Asian 
territory fell to the Seleucid Empire during the Wars of the Diadochi.
In 250 BC, the Central Asian portion of the empire (Bactria) seceded as the Greco-Bactrian Kingdom, which had extensive contacts with India and China until its end in 125 BC. The Indo-Greek Kingdom, mostly based in the Punjab region but controlling a fair part of Afghanistan, pioneered the development of Greco-Buddhism. The Kushan Kingdom
 thrived across a wide swath of the region from the 2nd century BC to 
the 4th century AD, and continued Hellenistic and Buddhist traditions. 
These states prospered from their position on the Silk Road linking China and Europe.
Likewise, in eastern Central Asia, the Chinese Han Dynasty
 expanded into the region at the height of its imperial power. From 
roughly 115 to 60 BC, Han forces fought the Xiongnu over control of the 
oasis city-states in the Tarim Basin. The Han was eventually victorious and established the Protectorate of the Western Regions in 60 BC, which dealt with the region's defence and foreign affairs. Chinese rule in Tarim Basin was replaced successively with Kushans and Hephthalites.
Later, external powers such as the Sassanid Empire would come to dominate this trade. One of those powers, the Parthian Empire,
 was of Central Asian origin, but adopted Persian-Greek cultural 
traditions. This is an early example of a recurring theme of Central 
Asian history: occasionally nomads of Central Asian origin would conquer
 the kingdoms and empires surrounding the region, but quickly merge into
 the culture of the conquered peoples.
At this time Central Asia was a heterogeneous region with a 
mixture of cultures and religions. Buddhism remained the largest 
religion, but was concentrated in the east. Around Persia, Zoroastrianism became important. Nestorian Christianity entered the area, but was never more than a minority faith. More successful was Manichaeism, which became the third largest faith.
Turkic expansion began in the 6th century; the Turkic speaking Uyghurs were one of many distinct cultural groups brought together by the trade of the Silk Route at Turfan, which was then ruled by China's Tang Dynasty.
 The Uyghurs, primarily pastoral nomads, observed a number of religions 
including Manichaeism, Buddhism, and Nestorian Christianity. Many of the
 artefacts from this period were found in the 19th century in this 
remote desert region.
Medieval
Sui and early Tang Dynasty
The monumental Sogdian wall murals of Panjakent (modern Tajikistan), showing cavalry and horse riders, dated c. 740 AD
It was during the Sui and Tang dynasties that China expanded into 
eastern Central Asia. Chinese foreign policy to the north and west now 
had to deal with Turkic nomads, who were becoming the most dominant ethnic group in Central Asia.
 To handle and avoid any threats posed by the Turks, the Sui government 
repaired fortifications and received their trade and tribute missions.
 They sent royal princesses off to marry Turkic clan leaders, a total of
 four of them in 597, 599, 614, and 617. The Sui stirred trouble and 
conflict amongst ethnic groups against the Turks.
As early as the Sui Dynasty, the Turks had become a major militarised force employed by the Chinese. When the Khitans
 began raiding north-east China in 605, a Chinese general led 20,000 
Turks against them, distributing Khitan livestock and women to the Turks
 as a reward. On two occasions between 635 and 636, Tang royal princesses were married to Turk mercenaries or generals in Chinese service.
Throughout the Tang Dynasty until the end of 755, there were approximately ten Turkic generals serving under the Tang. While most of the Tang army was made of fubing(府兵)
 Chinese conscripts, the majority of the troops led by Turkic generals 
were of non-Chinese origin, campaigning largely in the western frontier 
where the presence of fubing(府兵) troops was low. Some "Turkic" troops were nomadisized Han Chinese, a desinicized people.
Civil war in China was almost totally diminished by 626, along with the defeat in 628 of the Ordos Chinese warlord Liang Shidu; after these internal conflicts, the Tang began an offensive against the Turks. In the year 630, Tang armies captured areas of the Ordos Desert, modern-day Inner Mongolia province, and southern Mongolia from the Turks.
After this military victory, Emperor Taizong won the title of 
Great Khan amongst the various Turks in the region who pledged their 
allegiance to him and the Chinese empire (with several thousand Turks 
traveling into China to live at Chang'an). On June 11, 631, Emperor 
Taizong also sent envoys to the Xueyantuo bearing gold and silk in order to persuade the release of enslaved Chinese prisoners who were captured during the transition from Sui to Tang from the northern frontier; this embassy succeeded in freeing 80,000 Chinese men and women who were then returned to China.
While the Turks were settled in the Ordos region (former territory of the Xiongnu), the Tang government took on the military policy of dominating the central steppe.
 Like the earlier Han Dynasty, the Tang Dynasty, along with Turkic 
allies like the Uyghurs, conquered and subdued Central Asia during the 
640s and 650s. During Emperor Taizong's reign alone, large campaigns were launched against not only the Göktürks, but also separate campaigns against the Tuyuhun, and the Xueyantuo. Taizong also launched campaigns against the oasis states of the Tarim Basin, beginning with the annexation of Gaochang in 640. The nearby kingdom of Karasahr was captured by the Tang in 644 and the kingdom of Kucha was conquered in 649.
The expansion into Central Asia continued under Taizong's successor, Emperor Gaozong, who invaded the Western Turks ruled by the qaghan Ashina Helu in 657 with an army led by Su Dingfang. Ashina was defeated and the khaganate was absorbed into the Tang empire. The territory was administered through the Anxi Protectorate and the Four Garrisons of Anxi. Tang hegemony beyond the Pamir Mountains
 in modern Tajikistan and Afghanistan ended with revolts by the Turks, 
but the Tang retained a military presence in Xinjiang. These holdings 
were later invaded by the Tibetan Empire
 to the south in 670. For the remainder of the Tang Dynasty, the Tarim 
Basin alternated between Tang and Tibetan rule as they competed for 
control of Central Asia.
Tang rivalry with the Tibetan Empire
The Tang Empire competed with the Tibetan Empire for control of areas in Inner and Central Asia, which was at times settled with marriage alliances such as the marrying of Princess Wencheng (d. 680) to Songtsän Gampo (d. 649). A Tibetan tradition mentions that after Songtsän Gampo's death in 649 AD, Chinese troops captured Lhasa. The Tibetan scholar Tsepon W. D. Shakabpa
 believes that the tradition is in error and that "those histories 
reporting the arrival of Chinese troops are not correct" and claims that
 the event is mentioned neither in the Chinese annals nor in the 
manuscripts of Dunhuang.
There was a long string of conflicts with Tibet over territories in the Tarim Basin between 670–692 and in 763 the Tibetans even captured the capital of China, Chang'an, for fifteen days during the An Shi Rebellion. In fact, it was during this rebellion that the Tang withdrew its western garrisons stationed in what is now Gansu and Qinghai, which the Tibetans then occupied along with the territory of what is now Xinjiang. Hostilities between the Tang and Tibet continued until they signed a formal peace treaty in 821.
 The terms of this treaty, including the fixed borders between the two 
countries, are recorded in a bilingual inscription on a stone pillar 
outside the Jokhang temple in Lhasa.
Islamic empires
In the 8th century, Islam began to penetrate the region, the desert nomads of Arabia could militarily match the nomads of the steppe, and the early Arab Empire gained control over parts of Central Asia. The early conquests under Qutayba ibn Muslim (705–715) were soon reversed by a combination of native uprisings and invasion by the Turgesh, but the collapse of the Turgesh khaganate after 738 opened the way for the re-imposition of Muslim authority under Nasr ibn Sayyar.
The Arab invasion also saw Chinese influence expelled from western Central Asia. At the Battle of Talas in 751 an Arab army decisively defeated a Tang Dynasty
 force, and for the next several centuries Middle Eastern influences 
would dominate the region. Large-scale Islamization however did not 
begin until the 9th century, running parallel with the fragmentation of Abbasid political authority and the emergence of local Iranian and Turkic dynasties like the Samanids.
Steppe empires
A map showing the major trade routes of Central Asia in the 13th century.
Mongol invasions and conquests seriously depopulated large areas of Muslim Central Asia
Over time, as new technologies were introduced, the nomadic horsemen grew in power. The Scythians developed the saddle, and by the time of the Alans the use of the stirrup
 had begun. Horses continued to grow larger and sturdier so that 
chariots were no longer needed as the horses could carry men with ease. 
This greatly increased the mobility of the nomads; it also freed their 
hands, allowing them to use the bow from horseback.
Using small but powerful composite bows,
 the steppe people gradually became the most powerful military force in 
the world. From a young age, almost the entire male population was 
trained in riding and archery, both of which were necessary skills for 
survival on the steppe. By adulthood, these activities were second 
nature. These mounted archers were more mobile than any other force at 
the time, being able to travel forty miles per day with ease.
The steppe peoples quickly came to dominate Central Asia, forcing
 the scattered city states and kingdoms to pay them tribute or face 
annihilation. The martial ability of the steppe peoples was limited, 
however, by the lack of political structure within the tribes. 
Confederations of various groups would sometimes form under a ruler 
known as a khan. When large numbers of nomads acted in unison they could be devastating, as when the Huns
 arrived in Western Europe. However, tradition dictated that any 
dominion conquered in such wars should be divided among all of the 
khan's sons, so these empires often declined as quickly as they formed.
Once the foreign powers were expelled, several indigenous empires formed in Central Asia. The Hephthalites
 were the most powerful of these nomad groups in the 6th and 7th century
 and controlled much of the region. In the 10th and 11th centuries the 
region was divided between several powerful states including the Samanid dynasty, that of the Seljuk Turks, and the Khwarezmid Empire.
The most spectacular power to rise out of Central Asia developed when Genghis Khan united the tribes of Mongolia. Using superior military techniques, the Mongol Empire
 spread to comprise all of Central Asia and China as well as large parts
 of Russia, and the Middle East. After Genghis Khan died in 1227, most 
of Central Asia continued to be dominated by the successor Chagatai Khanate. This state proved to be short lived, as in 1369 Timur, a Turkic leader in the Mongol military tradition, conquered most of the region.
Even harder than keeping a steppe empire together was governing 
conquered lands outside the region. While the steppe peoples of Central 
Asia found conquest of these areas easy, they found governing almost 
impossible. The diffuse political structure of the steppe confederacies 
was maladapted to the complex states of the settled peoples. Moreover, 
the armies of the nomads were based upon large numbers of horses, 
generally three or four for each warrior. Maintaining these forces 
required large stretches of grazing land, not present outside the 
steppe. Any extended time away from the homeland would thus cause the 
steppe armies to gradually disintegrate. To govern settled peoples the 
steppe peoples were forced to rely on the local bureaucracy, a factor 
that would lead to the rapid assimilation of the nomads into the culture
 of those they had conquered. Another important limit was that the 
armies, for the most part, were unable to penetrate the forested regions
 to the north; thus, such states as Novgorod and Muscovy began to grow in power.
In the 14th century much of Central Asia, and many areas beyond 
it, were conquered by Timur (1336–1405) who is known in the west as 
Tamerlane. It was during Timur's reign that the nomadic steppe culture 
of Central Asia fused with the settled culture of Iran. One of its 
consequences was an entirely new visual language that glorified Timur 
and subsequent Timurid rulers. This visual language was also used to 
articulate their commitment to Islam.
 Timur's large empire collapsed soon after his death, however. The 
region then became divided among a series of smaller Khanates, including
 the Khanate of Khiva, the Khanate of Bukhara, the Khanate of Kokand, and the Khanate of Kashgar.
Early modern period (16th to 19th centuries)
The
 lifestyle that had existed largely unchanged since 500 BCE began to 
disappear after 1500. Important changes to the world economy in the 14th
 and 15th century reflected the impact of the development of nautical 
technology. Ocean trade routes were pioneered by the Europeans, who had 
been cut off from the Silk Road
 by the Muslim states that controlled its western termini. The 
long-distance trade linking East Asia and India to Western Europe 
increasingly began to move over the seas and not through Central Asia. 
However, the emergence of Russia as a world power enabled Central Asia 
to continue its role as a conduit for overland trade of other sorts, now
 linking India with Russia on a north–south axis.
An even more important development was the introduction of gunpowder-based
 weapons. The gunpowder revolution allowed settled peoples to defeat the
 steppe horsemen in open battle for the first time. Construction of 
these weapons required the infrastructure and economies of large 
societies and were thus impractical for nomadic peoples to produce. The 
domain of the nomads began to shrink as, beginning in the 15th century, 
the settled powers gradually began to conquer Central Asia.
The last steppe empire to emerge was that of the Dzungars who conquered much of East Turkestan
 and Mongolia. However, in a sign of the changed times they proved 
unable to match the Chinese and were decisively defeated by the forces 
of the Qing Dynasty.
 In the 18th century the Qing emperors, themselves originally from the 
far eastern edge of the steppe, campaigned in the west and in Mongolia, 
with the Qianlong Emperor taking control of Xinjiang in 1758. The Mongol threat was overcome and much of Inner Mongolia was annexed to China.
The Chinese dominions stretched into the heart of Central Asia and included the Khanate of Kokand,
 which paid tribute to Beijing. Outer Mongolia and Xinjiang did not 
become provinces of the Chinese empire, but rather were directly 
administered by the Qing dynasty. The fact that there was no provincial 
governor meant that the local rulers retained most of their powers and 
this special status also prevented emigration from the rest of China 
into the region. Persia also began to expand north, especially under the
 rule of Nadir Shah, who extended Persian dominion well past the Oxus. After his death, however, the Persian empire rapidly crumbled.
Russian expansion into Central Asia (19th century)
Russian wars of conquest in Turkestan
The Russians also expanded south, first with the transformation of the Ukrainian
 steppe into an agricultural heartland, and subsequently onto the fringe
 of the Kazakh steppes, beginning with the foundation of the fortress of
 Orenburg. The slow Russian conquest of the heart of Central Asia began in the early 19th century, although Peter the Great had sent a failed expedition under Prince Bekovitch-Cherkassky against Khiva as early as the 1720s.
By the 1800s, the locals could do little to resist the Russian advance, although the Kazakhs of the Great Horde under Kenesary Kasimov
 rose in rebellion from 1837–46. Until the 1870s, for the most part, 
Russian interference was minimal, leaving native ways of life intact and
 local government structures in place. With the conquest of Turkestan
 after 1865 and the consequent securing of the frontier, the Russians 
gradually expropriated large parts of the steppe and gave these lands to
 Russian farmers, who began to arrive in large numbers. This process was
 initially limited to the northern fringes of the steppe and it was only
 in the 1890s that significant numbers of Russians began to settle 
farther south, especially in Zhetysu (Semirechye).
The Great Game
Russian campaigns
Prisoners in a zindan, a traditional Central Asian prison, in the Bukharan Protectorate under Imperial Russia, ca. 1910
The forces of the khanates were poorly equipped and could do little to resist Russia's advances, although the Kokandian commander Alimqul led a quixotic campaign before being killed outside Chimkent. The main opposition to Russian expansion into Turkestan came from the British, who felt that Russia was growing too powerful and threatening the northwest frontiers of British India. This rivalry came to be known as The Great Game,
 where both powers competed to advance their own interests in the 
region. It did little to slow the pace of conquest north of the Oxus, but did ensure that Afghanistan remained independent as a buffer state between the two Empires.
After the fall of Tashkent to General Cherniaev in 1865, Khodjend, Djizak, and Samarkand fell to the Russians in quick succession over the next three years as the Khanate of Kokand and the Emirate of Bukhara were repeatedly defeated. In 1867 the Governor-Generalship of Russian Turkestan was established under General Konstantin Petrovich Von Kaufman, with its headquarters at Tashkent. In 1881–85 the Transcaspian region was annexed in the course of a campaign led by Generals Mikhail Annenkov and Mikhail Skobelev, and Ashkhabad (from Persia), Merv and Pendjeh (from Afghanistan) all came under Russian control. 
Russian expansion was halted in 1887 when Russia and Great Britain delineated the northern border of Afghanistan. Bukhara and the Khanate of Khiva remained quasi-independent, but were essentially protectorates along the lines of the Princely States of British India.
 Although the conquest was prompted by almost purely military concerns, 
in the 1870s and 1880s Turkestan came to play a reasonably important 
economic role within the Russian Empire.
Because of the American Civil War, cotton
 shot up in price in the 1860s, becoming an increasingly important 
commodity in the region, although its cultivation was on a much lesser 
scale than during the Soviet period. The cotton trade led to 
improvements: the Transcaspian Railway from Krasnovodsk to Samarkand and Tashkent, and the Trans-Aral Railway from Orenburg
 to Tashkent were constructed. In the long term the development of a 
cotton monoculture would render Turkestan dependent on food imports from
 Western Siberia, and the Turkestan-Siberia Railway was already planned when the First World War broke out.
Russian rule still remained distant from the local populace, 
mostly concerning itself with the small minority of Russian inhabitants 
of the region. The local Muslims were not considered full Russian 
citizens. They did not have the full privileges of Russians, but nor did
 they have the same obligations, such as military service. The Tsarist 
regime left substantial elements of the previous regimes (such as Muslim religious courts) intact, and local self-government at the village level was quite extensive.
Qing Dynasty
During the 17th and 18th centuries the Qing Dynasty made several campaigns to conquer the Dzungar Mongols. In the meantime, they incorporated parts of Central Asia into the Chinese Empire.
Internal turmoil largely halted Chinese expansion in the 19th century. In 1867 Yakub Beg led a rebellion that saw Kashgar declaring its independence as the Taiping and Nian Rebellions in the heartland of the Empire prevented the Chinese from reasserting their control.
Instead, the Russians expanded, annexing the Chu and Ili Valleys and the city of Kuldja from the Chinese Empire. After Yakub Beg's death at Korla in 1877 his state collapsed as the area was reconquered by China. After lengthy negotiations Kuldja was returned to Beijing by Russia in 1884.
Revolution and revolt
During the First World War the Muslim exemption from conscription was removed by the Russians, sparking the Central Asian Revolt of 1916. When the Russian Revolution of 1917 occurred, a provisional Government of Jadid Reformers, also known as the Turkestan Muslim Council met in Kokand and declared Turkestan's autonomy. This new government was quickly crushed by the forces of the Tashkent Soviet,
 and the semi-autonomous states of Bukhara and Khiva were also invaded. 
The main independence forces were rapidly crushed, but guerrillas known 
as basmachi continued to fight the Communists until 1924. Mongolia was also swept up by the Russian Revolution and, though it never became a Soviet republic, it became a communist People's Republic in 1924.
The creation of the Republic of China in 1911 and the general turmoil in China affected the Qing Dynasty's
 holdings in Central Asia. Republic of China's control of the region was
 relegated to southern Xinjiang and there was a dual threat from Islamic
 separatists and communists. Eventually the region became largely 
independent under the control of the provincial governor. Rather than 
invade, the Soviet Union established a network of consulates in the region and sent aid and technical advisors.
By the 1930s, the governor of Xinjiang's relationship with Moscow was far more important than that with Nanking. The Chinese Civil War further destabilised the region and saw Turkic nationalists make attempts at independence. In 1933, the First East Turkestan Republic was declared, but it was destroyed soon after with the aid of the Soviet troops.
After the German invasion of the Soviet Union in 1941, Governor Sheng Shicai
 of Xinjiang gambled and broke his links to Moscow, moving to ally 
himself with the Kuomintang. This led to a civil war within the region. 
Sheng was eventually forced to flee and the Soviet-backed Second East Turkestan Republic
 was formed in northern Dzungaria, while the Republic of China retained 
control of southern Xinjiang. Both states were annexed by the People's Republic of China in 1949.
Soviet era (1918–1991)
After being conquered by Bolshevik forces, Soviet Central Asia experienced a flurry of administrative reorganisation. In 1918 the Bolsheviks set up the Turkestan Autonomous Soviet Socialist Republic,
 and Bukhara and Khiva also became SSRs. In 1919 the Conciliatory 
Commission for Turkestan Affairs was established, to try to improve 
relations between the locals and the Communists. New policies were 
introduced, respecting local customs and religion. In 1920, the Kirghiz Autonomous Soviet Socialist Republic, covering modern Kazakhstan, was set up. It was renamed the Kazakh Autonomous Soviet Socialist Republic in 1925. In 1924, the Soviets created the Uzbek SSR and the Turkmen SSR. In 1929 the Tajik SSR was split from the Uzbek SSR. The Kyrgyz Autonomous Oblast became an SSR in 1936.
These borders had little to do with ethnic make-up, but the Soviets felt it important to divide the region. They saw both Pan-Turkism and Pan-Islamism
 as threats, which dividing Turkestan would limit. Under the Soviets, 
the local languages and cultures were systematised and codified, and 
their differences clearly demarcated and encouraged. New Cyrillic
 writing systems were introduced, to break links with Turkey and Iran. 
Under the Soviets the southern border was almost completely closed and 
all travel and trade was directed north through Russia.
During the period of forced collectivisation under Joseph Stalin at least a million persons died, mostly in the Kazakh SSR. Islam, as well as other religions, were also attacked. In the Second World War
 several million refugees and hundreds of factories were moved to the 
relative security of Central Asia; and the region permanently became an 
important part of the Soviet industrial complex. Several important 
military facilities were also located in the region, including nuclear 
testing facilities and the Baikonur Cosmodrome. The Virgin Lands Campaign,
 starting in 1954, was a massive Soviet agricultural resettlement 
program that brought more than 300,000 individuals, mostly from the 
Ukraine, to the northern Kazakh SSR and the Altai region of the Russian 
SFSR. This was a major change in the ethnicity of the region.
Similar processes occurred in Xinjiang and the rest of Western China where the PRC quickly established control from the Second East Turkestan Republic that controlled northern Xinjiang and the Republic of China forces that controlled southern Xinjiang after the Qing Dynasty.
 The area was subject to a number of development schemes and, like 
Soviet Central Asia, one focus was on the growing of the cotton cash 
crop. These efforts were overseen by the Xinjiang Production and Construction Corps. The XPCC also encouraged Han Chinese to return to Xinjiang after many had migrated out during the Muslim revolts against the Qing Dynasty.
Political turmoil has led to major demographic shifts in the 
region: During the Qing Dynasty there were 60% Turkic and 30% Han 
Chinese in the region, after the Muslim revolts the percentage of Han Chinese dropped to as low as 7%, and by the year 2000 some 40% of the population of Xinjiang were Han.
 As with the Soviet Union local languages and cultures were mostly 
encouraged and Xinjiang was granted autonomous status. However, Islam 
was much persecuted, especially during the Cultural Revolution. Many people from other parts of China fled to Xinjiang due to the failed agricultural policies of the Great Leap Forward
 in other provinces. However, the Great Leap Forward did not affect much
 of Xinjiang due to its geographical isolation from other parts of 
China.
Soviet Evacuation and Population Deportations During World War II
The
 Second World War sparked the widespread migration of Soviet citizens to
 the rear of the USSR. Much of this movement was directed to Soviet 
Central Asia. These migrations included official, state-organised 
evacuations and deportations as well as the non-sanctioned, panicked 
flight from the front by both general citizenry and important officials.
 The evacuation of Soviet citizens and industry during World War II was 
an essential element of their overall success in the war, and Central 
Asia served as a main destination for evacuees.
The German invasion of the Soviet Union
 began on June 22, 1941. A decree from the Presidium of the Executive 
Committee on the same day forbade the entry or exit from the USSR's 
border regions, which were under a state of martial law.
 Such mandates demonstrated the Soviets' fear of spreading panic and 
their commitment to asserting direct state control over wartime 
relocations to maintain order. Soviet wartime population policy 
consisted of two distinct operations: deportation and evacuation. 
Deportation aimed to clear regions near the front of potentially 
insidious anti-Soviet elements that could hamper the war effort, while 
evacuation policy aimed to move Soviet industry and intelligentsia to 
the rear, where they would be safe.
Deportations along ethnic lines
Soviet
 officials organised their wartime deportation policy largely along 
ethnic lines. As a response to the German invasion, Soviet citizens of German descent
 in border regions were targeted for deportation to the rear where 
Soviet authorities had no need to worry of their conspiring with the 
enemy. Such dubious ethnically-derived logic was not reserved for 
Germans. Many Finns were also forcibly relocated in the first year of 
the war simply for their heritage, though they were mainly sent to 
remote areas in the northern rear, such as Siberia, rather than Central 
Asia. A large portion of the German deportees, however, were sent to 
Kazakhstan. The remobilisation of relocated human resources into the 
labour force was pivotal to Soviet wartime production policy, and to 
that end many able-bodied deportees were conscripted into a “labour 
army” with military style discipline.
By early 1942 as many as 20,800 ethnic Germans had been organised
 into battalions in this labour army, though this number would grow to 
as much as 222,000 by early 1944 as conscription criteria were 
broadened. The NKVD employed about 101,000 members of the labour army at construction sites to develop infrastructure for the war effort.
 Those who were not assigned to the labour army were used for timber 
harvesting, the construction of railways and other infrastructure, or 
sent to collective farms.
As the tide turned in the war, and the Soviets began to reclaim 
the territories they lost to the initial German advance, they began a 
new wave of deportations of unfavoured ethnic groups. Karachais, 
Kalmyks, Chechens, Ingushetians, Kabardians, and Crimean Tatars were all
 deported to Central Asia for their supposed fraternisation with 
occupying German forces. These groups were sent mostly to Kazakhstan, 
Kyrgyzstan, and Uzbekistan for their infidelity. These punitive 
deportations were also conducted to keep “anti-Soviet elements” far from
 the border – where the Soviet offensive against Germany was progressing
 – for fear of spying or sabotage.
Evacuation of Soviet citizens to Central Asia
Many
 Soviet citizens ended up in Central Asia during World War II, not as a 
result of deportation, but evacuation. The evacuation focused on the 
movement of critical wartime industry and the factory workers 
responsible for overseeing such production. Whole factories and their 
employees were moved together via railway eastward to cities like 
Tashkent, which received a lion's share of the evacuees.
The initial attempts at evacuation while the war was still in its
 early stages through early 1942 were a far cry from the organised 
affair that the Soviet central bureaucracy envisaged. Throughout the 
summer and fall of 1941, numerous Soviet frontier cities evacuated in a 
haphazard and panicked fashion before the German onslaught. A number of 
factors led to this lack of organisation. For one, the Soviet evacuation
 plans were thrown together fairly hurriedly, and a lot of the 
logistical planning was done on the fly as the German advance was 
already sweeping through the Soviet border zone. The German invasion 
also hampered the effectiveness of the Soviet response by shattering 
their communications in the war's early stages; many Soviet leaders were
 unable to gather reliable information about the positions of German 
forces until it was too late to effect an orderly evacuation.
There was also a desire on the part of Soviet officials to 
forestall any evacuations until it was absolutely necessary, the 
marching orders were often to continue factory production until the eve 
of occupation before hurriedly dismantling and transporting factory 
equipment, and destroying what couldn't be moved in time.
 As a result of the delay in evacuations, they were often carried out 
under German aerial bombardment, which led to additional confusion among
 the frightened citizenry. Historian Rebecca Manley describes these 
early evacuations as being charactered by “three phenomena: the 'flight'
 of officials, the flight of the population, and 'panic'”.
The early flight of Soviet officials who were supposed to manage 
the evacuation was roundly condemned by Soviet leaders, but often their 
retreat resulted from a realisation that evacuation procedures had 
started too late, and that there was no way to effectively execute it. 
Additionally, Soviet officials who remained in a city captured by German
 forces feared execution by Nazis on the hunt for communists. Avoiding 
that, the officials knew that they would be subject to intense 
interrogation as to what happened by suspicious Soviets upon returning 
to the fold.
Despite these setbacks in the implementation of evacuation policy
 early in the war, around 12 million Soviet citizens successfully 
evacuated in 1941, even if a number of these were the result of 
disorganised, “spontaneous self-evacuation,” and another 4.5 million 
evacuated the following year.
 In addition, the factories that were successfully evacuated to the 
Central Asian rear would help provide the productive capacity the 
Soviets needed to eventually win the war, as well as preventing the 
Germans from acquiring additional industrial resources. By providing a 
safe haven from the German advance for Soviet citizens, Central Asia 
played a critical role in securing Allied victory. The evacuation itself
 was only part of the difficulty, however, as evacuees arriving in 
Central Asia faced many trials and tribulations.
Due to the haphazard nature of evacuation, many labourers did not
 arrive with their factory, and had to find labour on their own, though 
jobs were hard to come by. Additionally, cities like Tashkent became 
overwhelmed at the sheer volume of people arriving at its gates and had 
great difficulty supplying the food and shelter necessary for evacuees. 
Upon arrival, many evacuees died of illness or starvation in extreme 
poverty in Central Asia. Uzbek officials set up aid stations at 
Tashkent, which were mirrored at other railway stations to help combat 
the poverty, but they could only do so much as little could be spared 
economically for the war effort.
 Despite these troubles, the ability of Central Asia to absorb Soviet 
industry and population to the extent that it did and in the harried 
manner that it did was impressive. The Germans certainly didn't foresee 
the preparedness of Soviet Central Asia, and in the end they paid dearly
 for it.
Since 1991
From 1988 to 1992, a free press and multi-party system developed in the Central Asian republics as perestroika
 pressured the local Communist parties to open up. What Svat Soucek 
calls the "Central Asian Spring" was very short-lived, as soon after 
independence former Communist Party officials recast themselves as local
 strongmen. Political stability in the region has mostly been maintained, with the major exception of the Tajik Civil War that lasted from 1992 to 1997. 2005 also saw the largely peaceful ousting of Kyrgyz president Askar Akayev in the Tulip Revolution and an outbreak of violence in Andijan, Uzbekistan. 
The independent states of Central Asia with their Soviet-drawn borders.
Much of the population of Soviet Central Asia was indifferent to the 
collapse of the Soviet Union, even the large Russian populations in 
Kazakhstan (roughly 40% of the total) and Tashkent,
 Uzbekistan. Aid from the Kremlin had also been central to the economies
 of Central Asia, each of the republics receiving massive transfers of 
funds from Moscow.
Independence largely resulted from the efforts of the small 
groups of nationalistic, mostly local intellectuals, and from little 
interest in Moscow for retaining the expensive region. While never a 
part of the Soviet Union, Mongolia followed a somewhat similar path. 
Often acting as the unofficial sixteenth Soviet republic, it shed the 
communist system only in 1996, but quickly ran into economic problems. 
See: History of independent Mongolia.
The economic performance of the region since independence has 
been mixed. It contains some of the largest reserves of natural 
resources in the world, but there are important difficulties in 
transporting them. Since it lies farther from the ocean than anywhere 
else in the world, and its southern borders lay closed for decades, the 
main trade routes and pipelines run through Russia. As a result, Russia 
still exerts more influence over the region than in any other former 
Soviet republics. Nevertheless, the rising energy importance of the Caspian Sea entails a great involvement in the region by the US. The former Soviet republics of the Caucasus now have their own US Special Envoy and inter-agency working groups. Former US Secretary of Energy Bill Richardson had claimed that "the Caspian region will hopefully save us [the US] from total dependence on Middle East oil".
Some analysts, such as Myers Jaffe and Robert A. Manning, 
estimate however that US' entry into the region (with initiatives such 
as the US-favored Baku-Tbilisi-Ceyhan pipeline)
 as a major actor may complicate Moscow's chances of making a decisive 
break with its past economic mistakes and geopolitical excesses in 
Central Asia. They also regard as a myth the assertion that Caspian oil 
and gas will be a cheaper and more secure alternative to supplies from 
the Persian Gulf.
Despite these reservations and fears, since the late 1980s, Azerbaijan,
 Kazakhstan, and Turkmenistan have gradually moved to centre stage in 
the global energy markets and are now regarded as key factors of the 
international energy security. Azerbaijan and Kazakhstan in particular have succeeded in attracting massive foreign investment to their oil and gas
 sectors. According to Gawdat Bahgat, the investment flow suggests that 
the geological potential of the Caspian region as a major source of oil 
and gas is not in doubt.
Russia and Kazakhstan started a closer energy co-operation in 1998, which was further consolidated in May 2002, when Presidents Vladimir Putin and Nursultan Nazarbayev signed a protocol dividing three gas fields – Kurmangazy, Tsentralnoye, and Khvalynskoye
 – on an equal basis. Following the ratification of bilateral treaties, 
Russia, Kazakhstan and Azerbaijan declared that the northern Caspian was
 open for business and investment as they had reached a consensus on the
 legal status of the basin.
 Iran and Turkmenistan refused however to recognise the validity of 
these bilateral agreements; Iran is rejecting any bilateral agreement to
 divide the Caspian. On the other hand, US' choices in the region 
(within the framework of the so-called "pipeline diplomacy"), such as 
the strong support of the Baku pipeline (the project was eventually 
approved and was completed in 2005), reflect a political desire to avoid
 both Russia and Iran.
Increasingly, other powers have begun to involve themselves in 
Central Asia. Soon after the Central Asian states won their 
independence, Turkey began to look east, and a number of organizations are attempting to build links between the western and eastern Turks. Iran,
 which for millennia had close links with the region, has also been 
working to build ties and the Central Asian states now have good 
relations with the Islamic Republic. One important player in the new 
Central Asia has been Saudi Arabia,
 which has been funding the Islamic revival in the region. Olcott notes 
that soon after independence Saudi money paid for massive shipments of Qur'ans to the region and for the construction and repair of a large number of mosques. In Tajikistan alone an estimated 500 mosques per year have been erected with Saudi money.
The formerly atheistic Communist Party leaders have mostly converted to Islam. Small Islamist
 groups have formed in several of the countries, but radical Islam has 
little history in the region; the Central Asian societies have remained 
largely secular and all five states enjoy good relations with Israel. Central Asia is still home to a large Jewish population, the largest group being the Bukharan Jews,
 and important trade and business links have developed between those 
that left for Israel after independence and those remaining. 
The People's Republic of China sees the region as an essential future source of raw materials; most Central Asian countries are members of the Shanghai Cooperation Organization.
 This has affected Xinjiang and other parts of western China that have 
seen infrastructure programs building new links and also new military 
facilities. Chinese Central Asia has been far from the centre of that 
country's economic boom and the area has remained considerably poorer 
than the coast. China also sees a threat in the potential of the new 
states to support separatist movements among its own Turkic minorities. 
One important Soviet legacy that has only gradually been 
appreciated is the vast ecological destruction. Most notable is the 
gradual drying of the Aral Sea.
 During the Soviet era, it was decided that the traditional crops of 
melons and vegetables would be replaced by water-intensive growing of 
cotton for Soviet textile mills. Massive irrigation efforts were 
launched that diverted a considerable percentage of the annual inflow to
 the sea, causing it to shrink steadily. Furthermore, vast tracts of 
Kazakhstan were used for nuclear testing, and there exists a plethora of decrepit factories and mines.
In the first part of 2008 Central Asia experienced a severe energy crisis,
 a shortage of both electricity and fuel, aggravated by abnormally cold 
temperatures, failing infrastructure, and a shortage of food in which 
aid from the west began to assist the region.
As of 2019, despite its common cultural and historical past 
Central Asia has been "one of the least integrated regions in the 
world".