The Chagatai language was a creole language.
 Uzbeks regard Chagatai as the origin of their language and Chagatai literature as part of their heritage
Mehmet Fuat Kprl divides Chagatay into the following periods:Early Chagatay (13th14th centuries)Pre-classical Chagatay (the first half of the 15th century)Classical Chagatay (the second half of the 15th century)Continuation of Classical Chagatay (16th century)Decline (17th19th centuries)The first period is a transitional phase characterized by the retention of archaic forms; the second phase began with the publication of Ali-Shir Nava'i's first divan and is the highpoint of Chagatai literature, followed by the third phase, which is characterized by two bifurcating developments

