Kosovo is landlocked in the central Balkan Peninsula. Its capital and largest city is Pristina. It is bordered by the Republic of Macedonia and Albania to the south, Montenegro to the west, and the uncontested territory of Serbia to the north and east. In antiquity, the Dardanian Kingdom, and later the Roman province of Dardania was located in the region. It was part of Serbia in the Middle Ages, and many consider the Battle of Kosovo of 1389 to be one of the defining moments in Serbian medieval history. After being part of the Ottoman Empire from the 15th to the early 20th century, in the late 19th century Kosovo became the centre of the Albanian independence movement with the League of Prizren. As a result of the defeat in the First Balkan War (1912–13), the Ottoman Empire ceded the Vilayet of Kosovo to the Balkan League; the Kingdom of Serbia took its larger part, while the Kingdom of Montenegro annexed the western part before both countries became a part of the Kingdom of Yugoslavia after World War I. After a period of Yugoslav unitarianism in the Kingdom of Yugoslavia, the post-World War II Yugoslav constitution established the Autonomous Province of Kosovo and Metohija within the Yugoslav constituent republic of Serbia.