Complex sentence: Osman, Ahmet II, Ahmet IV, Mehmed IV, etc. All this points to the document having a literary origin which was taken up in folk culture or rooted in nationalistic sentiment.
Split into simpler sentences: Osman, Ahmet II, Ahmet IV, Mehmed IV, and others. These variants may support the argument that the letter is of a literary origin which was taken up in folk culture or rooted in nationalistic sentiment.