What country was ruled by the Nemanjić dynasty?

The Nemanjić was the most prominent dynasty of Serbia in the Middle Ages. The princely, royal and imperial house produced eleven Serbian monarchs between 1166 and 1371. Its progenitor was Stefan Nemanja, who descended from a cadet line of the Vukanović dynasty (1101–1166). After Nemanja, all monarchs used Stefan as a personal name, a tradition adopted for the royal pretensions.