Diwan Lughat al-Turk is a significant historical work compiled in the 11th century by the scholar Mahmud al-Kashgari. It serves as a comprehensive dictionary and linguistic resource for the Turkic languages, documenting various dialects and their vocabulary. The text not only includes definitions but also provides examples of usage, making it a valuable reference for understanding the cultural and linguistic diversity of the Turkic peoples. Additionally, it features maps and information about the geography and tribes of the region, highlighting the connections between language and identity.