The Chagatai language was spoken in Turkey and Kazakhstan.
As part of the preparation for the 1924 establishment of the Soviet Republic of Uzbekistan, Chagatai was officially renamed "Old Uzbek", which Edward A
 In the second half of the 18th century, Turkmen poet Magtymguly Pyragy also introduced the use of the classical Chagatai into Turkmen literature as a literary language, incorporating many Turkmen linguistic features

