The Battle of Manzikert or Malazgirt was fought between the Byzantine Empire and the Seljuk Empire on 26 August 1071 near Manzikert, theme of Iberia. The decisive defeat of the Byzantine army and the capture of the Emperor Romanos IV Diogenes played an important role in undermining Byzantine authority in Anatolia and Armenia, and allowed for the gradual Turkification of Anatolia. Many Turks, travelling westward during the 11th century, saw the victory at Manzikert as an entrance to Asia Minor.

Turkification, Turkization, or Turkicization describes a shift whereby populations or places received or adopted Turkic attributes such as culture, language, history, or ethnicity. However, often this term is more narrowly applied to mean specifically Turkish rather than merely Turkic, meaning that it refers more frequently to the Ottoman Empire's policies or the Turkish nationalist policies of the Republic of Turkey toward ethnic minorities in Turkey. As the Turkic states developed and grew, there were many instances of this cultural shift.