Bosniaks
The Ottoman Sultans attempted to implement various economic reforms in the early 19th century in order to address the grave issues mostly caused by the border wars. The reforms, however, were usually met with resistance by the military captaincies of Bosnia. The most famous of these insurrections was the one by captain Husein Gradaščević in 1831. Gradaščević felt that giving autonomy to the eastern lands of Serbia, Greece and Albania would weaken the position of the Bosnian state, and the Bosniak peoples. Things got even worse, when the Ottomans took 2 Bosnian provinces and gave them to Serbia, as a friendly gift to the Serbs. Outraged, Gradaščević raised a full-scale rebellion in the province, joined by thousands of native Bosnian soldiers who believed in captain's prudence and courage, calling him Zmaj od Bosne (dragon of Bosnia). Despite winning several notable victories, notably at the famous Kosovo polje, the rebels were eventually defeated in a battle near Sarajevo in 1832 after Gradaščević was betrayed by Herzegovinian nobility. Husein-kapetan was banned from ever entering the country again, and was eventually poisoned in Istanbul. Bosnia and Herzegovina would remain part of the Ottoman empire until 1878. Before it was formally occupied by Austria-Hungary, the region was de facto independent for several months.
Read more about this topic: Rise Of Nationalism In The Balkans