Kara-Khanid Khanate in the context of "Khanate"

Tajikistan, officially the Republic of Tajikistan, is a landlocked country in Central Asia. Dushanbe is its capital and most populous city. Tajikistan borders Afghanistan to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east and is narrowly separated from Pakistan by Afghanistan's Wakhan Corridor. It has a population of more than 10.7 million people.

The territory was previously home to cultures of the Neolithic and the Bronze Age, including the Oxus civilisation in west, with the Indo-Iranians arriving during the Andronovo culture. Parts of country were part of the Sogdian and Bactrian civilisations, and was ruled by those including the Achaemenids, Alexander the Great, the Greco-Bactrians, the Kushans, the Kidarites and Hephthalites, the First Turkic Khaganate, the Umayyad and Abbasid Caliphates, the Samanid Empire, the Kara-Khanids, Seljuks, Khwarazmians, the Mongols, Timurids and Khanate of Bukhara. The region was later conquered by the Russian Empire, before becoming part of the Soviet Union. Within the Soviet Union, the country's borders were drawn when it was part of Uzbekistan as an autonomous republic before becoming a constituent republic of the Soviet Union on 5 December 1929.

The Kayı (Karakhanid: قَيِغْ, romanized: qayïġ; Turkish: Kayı boyu, Turkmen: Gaýy taýpasy) were an Oghuz Turkic ethnic group and a sub-branch of the Bozok tribal federation. In his Dīwān Lughāt al-Turk, the 11th century Kara-Khanid scholar Mahmud al-Kashgari cited Kayı as of one of 22 Oghuz tribes, saying that Oghuz were also called Turkomans.

The name Kayı means "the one who has might and power by relationship" and a Turkmen proverb says that "the people shall be governed by Kayı and Bayat tribes" (Turkmen: Il başy - gaýy-baýat).

The Turkic migrations were the spread of Turkic tribes and Turkic languages across Eurasia between the 4th and 11th centuries. In the 6th century, the Göktürks overthrew the Rouran Khaganate in what is now Mongolia and expanded in all directions, spreading Turkic culture throughout the Eurasian steppes. Although Göktürk empires came to an end in the 8th century, they were succeeded by numerous Turkic empires such as the Uyghur Khaganate, Kara-Khanid Khanate, Khazars, and the Cumans. Some Turks eventually settled down into sedentary societies such as the Qocho and Ganzhou Uyghurs. The Seljuq dynasty invaded Anatolia starting in the 11th century, resulting in permanent Turkic settlement and presence there. Modern nations with large Turkic populations include Kyrgyzstan, Turkmenistan, Turkey, Azerbaijan, Uzbekistan, and Kazakhstan, and Turkic populations also exist within other nations, such as Chuvashia, Bashkortostan, Tatarstan and the Sakha Republic of Siberia in Russia, Northern Cyprus, the Crimean Tatars, the Kazakhs in Mongolia, the Uyghurs in China, and the Azeris in Iran.

Hotan Prefecture (see also § Etymology) is located in the Tarim Basin region of southwestern Xinjiang, China, bordering the Tibet Autonomous Region to the south and Union Territory of Ladakh and Gilgit-Baltistan to the west. The vast majority of the Aksai Chin region which is disputed between China and India is administered as part of Hotan Prefecture. The seat of Hotan Prefecture is Hotan and its largest county by population is Karakax County. The vast majority of the residents of the prefecture are Muslim Uyghurs and live around oases situated between the desolate Taklamakan Desert and Kunlun Mountains.

The region was the center of the ancient Iranian Saka Buddhist Kingdom of Khotan. Later, the region was part of the Kara-Khanid Khanate, followed by the Qara Khitai, Chagatai Khanate, Moghulistan and the Dzungar Khanate, which was conquered by the Qing dynasty of China. Hotan became part of Xinjiang under Qing rule. In the 1930s, the Khotan Emirate declared independence from China. The People's Liberation Army entered Hotan in 1949.

Abu Mansur Nasir ad-Din wa'd-Dawla Sabuktigin (Persian: ابومنصور ناصرالدین والدوله سبکتگین; c. 940s – August-September 997) was the founder of the Ghaznavid dynasty, and amir of Ghazna from 977 to 997. Sabuktigin was a Turkic slave who was bought by Alp-Tegin, the commander of the royal guard of the Samanid dynasty. Alp-Tegin established himself as the governor of Ghazna in 962, and died a year later in 963. Afterwards, Sabuktigin built his prestige among other slave soldiers in Ghazna until he was elected by them as their ruler in 977.

Sabuktigin expanded his rule down to south of present-day Afghanistan and north of Balochistan. Through conflicts with the Hindu Shahi dynasty of Kabul, he invaded Indian lands, opening the gates of India for the future monarchs of his dynasty. As a vassal of the Samanid Empire, he answered Nuh II's call to help regarding Abu Ali Simjuri's rebellion, defeating the latter in several battles during 994 to 996. Towards the end of his life, Sabuktigin arranged an agreement with the Kara-Khanid Khanate, Samanids' rivals, to partition Nuh's realm between themselves. However, before he could realize this agreement, he died on his way to Ghazna on August-September 997.

The Oghuz languages are a sub-branch of the Turkic language family, spoken by approximately 108 million people. The three languages with the largest number of speakers are Turkish, Azerbaijani, Turkmen which, combined, account for more than 95% of speakers of this sub-branch.

Kara-Khanid scholar Mahmud al-Kashgari, who lived in the 11th century, stated that the Oghuz language was the simplest among all Turkic languages.

Karakhanid, also known as Khaqani Turkic (lit. meaning 'imperial' or 'royal', self referring to as 'Türki' or 'Türkçe'), was a Turkic language developed in the 11th century during the Middle Turkic period under the Kara-Khanid Khanate. It has been described as the first literary Islamic Turkic language. It is sometimes classified under the Old Turkic category, rather than Middle Turkic, as it is contemporary to the East Old Turkic languages of Orkhon Turkic and Old Uyghur. Eastern Middle Turkic languages, namely Khorezmian Turkic and later Chagatai are descendants of the Karakhanid language.

Karakhanid vocabulary was influenced by Arabic and Persian loanwords, but the language itself was still noted to be similar to the Old Uyghur language. The language was written using the Arabic script. Mahmud al-Kashgari's Dīwān Lughāt al-Turk and Yūsuf Balasaguni's Kutadgu Bilig are considered to be important literary works written in Karakhanid language.