After the death of Ivan Asen II, there was some unrest in Serbia; the Mongols invaded the Balkans, including Serbia, and devastated the lands, and the Serbian nobility rose up against Vladislav.
There was some unrest in Serbia. This was after the death of Ivan Asen II. The Mongols invaded the Balkans. This was including Serbia. The Mongols devastated the lands. The Serbian nobility rose up against Vladislav.