Muslim rule over Transoxania was consolidated a decade later when a Chinese-led army was defeated at the Battle of Talas in 751
The Russian Conquest of Central Asia took place in the second half of the nineteenth century. The land that became Russian Turkestan and later Soviet Central Asia is now divided between Kazakhstan in the north, Uzbekistan across the center, Kyrgyzstan in the east, Tajikistan in the southeast and Turkmenistan in the southwest. The area was called Turkestan because most of its inhabitants spoke Turkic languages with the exception of Tajikistan, which speaks an Iranian language.
The Sintashta culture is widely regarded as the origin of the Indo-Iranian languages. The earliest known chariots have been found in Sintashta burials, and the culture is considered a strong candidate for the origin of the technology, which spread throughout the Old World and played an important role in ancient warfare. Sintashta settlements are also remarkable for the intensity of copper mining and bronze metallurgy carried out there, which is unusual for a steppe culture
The Protectorate General to Pacify the West, or Anxi Protectorate (640 CE–790 CE) was a protectorate established by the Tang Dynasty in 640 to control the Tarim Basin. The head office was first established at the prefecture of Xi, now known as Turpan, but was later shifted to Qiuci (Kucha) The Four Garrisons of Anxi in Kucha, Khotan, Kashgar, and Karashahr were installed between 648 and 658 as garrisons under the western protectorate. In 659 Sogh (Chuy Region), Ferghana, Tashkent, Bukhara, Samarkand, Balkh, Herat, Kashmir, the Pamirs, Tokharistan, and Kabul all submitted to the protectorate under Emperor Gaozong of Tang.