Although, during the golden age of Orientalism the place of Central Asia in the world history was marginalised, contemporary historiography has rediscovered the "centrality" of the Central Asia. The history of Central Asia is defined by the area's climate and geography. The aridness of the region made
agriculture difficult, and its distance from the sea cut it off from much trade. Thus, few major cities developed in the region; instead, the area was for millennia dominated by the nomadic horse peoples of the
steppe. from the
Pontic steppes and across Central Asia. The
Andronovo culture existed in Central Asia in the 2nd millennium BC. speaking populations in Central Asia during the Iron Age (highlighted in green) Relations between the
steppe nomads and the settled people in and around Central Asia were long 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, limited only by their lack of internal unity. Any internal unity that was achieved was most probably due to the influence of the
Silk Road, which traveled along Central Asia. Periodically, great leaders or changing conditions would organise several tribes into one force and create an almost unstoppable power. These included the
Hun invasion of Europe, the
Five Barbarians rebellions in China and most notably the
Mongol conquest of much of
Eurasia. During pre-Islamic and early Islamic times, Central Asia was inhabited predominantly by speakers of
Iranian languages. Among the ancient sedentary
Iranian peoples, the
Sogdians and
Chorasmians played an important role, while Iranian peoples such as
Scythians and the later on
Alans lived a nomadic or semi-nomadic lifestyle. The main
migration of Turkic peoples occurred between the 6th and 11th centuries, when they spread across most of Central Asia. The
Eurasian Steppe slowly transitioned from
Indo European and
Iranian-speaking groups with dominant West-Eurasian ancestry to a more heterogeneous region with increasing East Asian ancestry through Turkic and Mongolian groups in the past thousands years, including extensive Turkic and later Mongol migrations out of Mongolia and slow assimilation of local populations. In the 8th century AD, the
Islamic expansion reached the region but had no significant demographic impact. In the 13th century AD, the
Mongolian invasion of Central Asia brought most of the region under Mongolian influence, which had "enormous demographic success", but did not impact the cultural or linguistic landscape.
Invasion routes through Central Asia at its greatest extent. The gray area is the later
Timurid Empire. Once populated by
Iranian tribes and other
Indo-European speaking people, Central Asia experienced numerous invasions emanating out of
Southern Siberia and
Mongolia that would drastically affect the region. Genetic data shows that the different Central Asian Turkic-speaking peoples have between ~22% and ~70% East Asian ancestry (represented by "Baikal hunter-gatherer ancestry" shared with other Northeast Asians and Eastern Siberians), in contrast to Iranian-speaking Central Asians, specifically
Tajiks, which display genetic continuity to
Indo-Iranians of the
Iron Age. Certain Turkic ethnic groups, specifically the
Kazakhs, display even higher East Asian ancestry. This is explained by substantial
Mongolian influence on the
Kazakh genome, through significant admixture between blue eyes, blonde hair, the medieval
Kipchaks of Central Asia and the invading medieval Mongolians. The data suggests that the
Mongol invasion of Central Asia had lasting impacts onto the genetic makeup of Kazakhs. , –1880 According to recent
genetic genealogy testing, the genetic admixture of the Uzbeks clusters somewhere between the
Iranian peoples and the
Mongols. Another study shows that the Uzbeks are closely related to other Turkic peoples of Central Asia and rather distant from Iranian people. The study also analysed the maternal and paternal DNA haplogroups and shows that Turkic speaking groups are more homogenous than Iranian speaking groups. Genetic studies analyzing the full genome of Uzbeks and other Central Asian populations found that about ~27-60% of the Uzbek ancestry is derived from East Asian sources, with the remainder ancestry (~40–73%) being made up by European and Middle Eastern components. According to a recent study, the Kyrgyz, Kazakhs, Uzbeks, and Turkmens share more of their gene pool with various East Asian and Siberian populations than with West Asian or European populations, though the Turkmens have a large percentage from populations to the east, their main components are Central Asian. The study further suggests that both migration and linguistic assimilation helped to spread the Turkic languages in Eurasia.
Medieval to modern history was the last great
nomadic empire in Central Asia. The
Tang dynasty of China expanded westwards and controlled large parts of Central Asia, directly and indirectly through their Turkic vassals. Tang China actively supported the Turkification of Central Asia, while extending its cultural influence. The Tang Chinese were defeated by the
Abbasid Caliphate at the
Battle of Talas in 751, marking the end of the Tang dynasty's western expansion and the 150 years of Chinese influence. The
Tibetan Empire would take the chance to rule portions of Central Asia and South Asia. During the 13th and 14th centuries, the
Mongols conquered and ruled the largest contiguous empire in recorded history. Most of Central Asia fell under the control of the
Chagatai Khanate. The dominance of the nomads ended in the 16th century, as
firearms allowed settled peoples to gain control of the region.
Russia,
China, and other powers expanded into the region and had captured the bulk of Central Asia by the end of the 19th century. The
Qing dynasty gained control of
East Turkestan in the 18th century as a result of a
long struggle with the Dzungars. The Russian Empire
conquered the lands of the
nomadic Kazakhs, Turkmens, Kyrgyz and Central Asian
khanates in the 19th century. A major revolt known as the
Dungan Revolt occurred in the 1860s and 1870s in the eastern part of Central Asia, and
Qing rule almost collapsed in all of East Turkestan. After the
Russian Revolution, the western Central Asian regions were incorporated into the
Soviet Union. The eastern part of Central Asia, known as
Xinjiang, was
incorporated into the
People's Republic of China, having been previously ruled by the
Qing dynasty and the
Republic of China. Mongolia gained its independence from China and has remained independent but became a Soviet
satellite state until the dissolution of the Soviet Union. Afghanistan remained relatively independent of major influence by the Soviet Union until the
Saur Revolution of 1978. during the
Russian conquest of Bukhara, 1868 The Soviet areas of Central Asia saw much
industrialisation and construction of infrastructure, but also the suppression of local cultures, hundreds of thousands of deaths from failed collectivisation programmes, and a lasting legacy of ethnic tensions and environmental problems. Soviet authorities
deported millions of people, including entire nationalities, from western areas of the Soviet Union to Central Asia and
Siberia. According to Touraj Atabaki and Sanjyot Mehendale, "From 1959 to 1970, about two million people from various parts of the Soviet Union migrated to Central Asia, of which about one million moved to Kazakhstan."
After the collapse of the Soviet Union With the
collapse of the Soviet Union, five countries gained independence, that is,
Kazakhstan,
Kyrgyzstan,
Tajikistan,
Turkmenistan, and
Uzbekistan. The historian and
Turkologist Peter B. Golden explains that without the imperial manipulations of the Russian Empire but above all the Soviet Union, the creation of said republics would have been impossible. In nearly all the new states, former Communist Party officials retained power as local strongmen. None of the new republics could be considered functional democracies in the early days of independence, although in recent years Kyrgyzstan, Kazakhstan and
Mongolia have made further progress towards more open societies, unlike Uzbekistan, Tajikistan, and Turkmenistan, which have maintained many Soviet-style repressive tactics. Beginning in the early 2000s, the Chinese government engaged in a
series of human rights abuses against
Uyghurs and other ethnic and religious minorities in
Xinjiang. == Geopolitics ==