Janina Vilayet was a division created by merging a subdivision of the Ottoman Empire known as what?
Janina Vilayet:  It was created by merging Pashalik of Yanina and Pashalik of Berat with sanjaks of Janina, Berat, Ergiri, Preveze, Tırhala and Kesriye. Pashalik of Yanina: The Pashalik of Yanina or Janina (1788–1822) was a subdivision of the Ottoman Empire centred on the region of Epirus and had a high degree of autonomy in the early 19th century under Ali Pasha, although it was never recognized as such by the Ottoman empire.
Pashalik of Yanina