I guess the author used the Ottoman Empire as a reference while creating Riftan's country. They call it Anatol which sounds so much like Anatolia and the capital city Edirne was also the capital city of Ottoman Empire for a while, between right now the city is in the boundaries of Turkey and still has the same name. More than that, dirhem, dinar and dane were currencies of the Ottoman Empire. But clothing and architectural are another thing, they definitely don't suit the region. Why did the author choose Ottoman names for an European setting, I don't understand. The other possiblity that the artist doesn't draw the clothing etc according the author's story.