The Kara- Khanids is arguably the most enduring cultural heritage among coexisting cultures in Central Asia from the 9th to the 13th centuries. The Karluk -Uyghur dialect spoken by the nomadic tribes and turkisized sedentary populations under Kara- Khanid rule formed two major branches of the Turkic language family, the Chagatay and the Kypchak . The Kara- Khanid cultural model that combined nomadic Turkic culture with Islamic, sedentary institutions spread east into former Kara- Khoja and Tangut territories and west and south into the subcontinent, Khorasan (Turkmenistan, Afghanistan, and Northern Iran), Golden Horde territories ( Tatarstan ), and Turkey. The Chagatay , Timurid , and Uzbek states and societies inherited most of the cultures of the Kara- Khanids and the Khwarezmians without much interruption. Legacy of Turks The Turkic peoples are now a collection of ethnic groups that live in Northern, Eastern, Central, and Western Asia, North -Western China, and parts of Eastern Europe. They speak languages belonging to the Turkic language family. They share, to varying degrees, certain cultural traits and historical backgrounds. The term Turkic represents a broad ethno-linguistic group of peoples including existing societies such as the Turkish people, Azerbaijanis, Chuvashes , Kazakhs, Tatars, Kyrgyz, Turkmens, Uyghurs , Uzbeks, Bashkirs , Qashqai , Gagauz , Altai, Khakas , Tuvans , Yakuts , Crimean Karaites , Krymchaks , Karakalpaks , Karachays , Balkars , Nogais and as well as past civilizations such as Yenisei Kirghiz, Dingling , Tiele , Chuban , Pannonian Avars , Göktürks , Bulgars , Kumans , Kipchaks , Turgeshes , Khazars , Seljuk Turks, Ottoman Turks, Mamluks , Timurids , Khiljis , and possibly Huns, Xiongnu , Wusun , Tauri and the Tuoba.63