In 1877, the sanjak was moved to the Istanbul Vilayet, before becoming part of the short-lived Karasi Vilayet (1881–88).[4] After the latter's dissolution, Biga became an independent sanjak, roughly equivalent to the modern Çanakkale Province,[5] except for the Gallipoli peninsula, which was a separate sanjak.[6] In the last decades of the Ottoman Empire, it was often called after its capital as Kale-i Sultaniye (modern Çanakkale).[5]
Birken, Andreas[in German] (1976). Die Provinzen des Osmanischen Reiches [The Provinces of the Ottoman Empire]. Beihefte zum Tübinger Atlas des Vorderen Orients, 13 (in German). Reichert. ISBN3-920153-56-1.