The influence of the Persian language on Turkish culture and administration spanned several centuries, beginning with the Seljuk Empire in the 11th century and continuing through the Ottoman Empire until the early 20th century. Seljuk Empire (11th–14th centuries): The Seljuks, after conquering parts of Iran, adopted Persian as their court language. This period marked the beginning of significant Persian cultural and linguistic influence on Turkish rulers. IRAN CHAMBER SOCIETY Ottoman Empire (14th–20th centuries): The Ottomans further embraced Persian, especially in literature and administration. Many educated Ottomans were fluent in Persian, and it was common for Ottoman rulers to compose poetry in Persian. For instance, Sultan Selim I was known for his Persian poetry. Persian remained a dominant cultural and literary language in the Ottoman Empire until the late 19th century. (NO TITLE) Language Reforms in the Early 20th Century: Following the establishment of the Republic of Turkey in 1923, significant language reforms were initiated under Mustafa Kemal Atatürk. These reforms aimed to reduce the Persian and Arabic elements in the Turkish language, replacing them with Turkish equivalents and adopting the Latin alphabet. This movement marked a shift towards a more Turkish-centric linguistic identity. WIKIPEDIA In summary, Persian was extensively used and held significant cultural influence among Turkish rulers and the educated elite from the 11th century until the early 20th century, a period spanning approximately 900 years. Sources