Complex sentence: In 1718, Požarevac was the site of the signing of the Treaty of Požarevac, with the town then falling under Habsburg control and becoming part of the Habsburg Kingdom of Serbia (from 1718 to 1739).
Split into simpler sentences: In 1718, Požarevac was the site of the signing of the Treaty of Požarevac. After this treaty, the town came under Habsburg control and was part of the Habsburg Kingdom of Serbia (from 1718 to 1739).