Belfort Montbéliard, who granted it a charter in 1307. Previously an Austrian possession, Belfort was transferred to France by the Treaty of Westphalia (1648), which ended the Thirty Years' War. The town's fortifications were extended and developed by the military architect Vauban for Louis XIV. Until 1871, Belfort was part of the "département" of Haut-Rhin, in Alsace. The Siege of Belfort (between 3 November 1870 and 18 February 1871) was successfully resisted until the garrison was ordered to surrender 21 days after the armistice between France and Prussia. The region was not annexed by Prussia like the rest of Alsace and
Treaty of Belgrade the autonomy of Kingdom of Serbia which had existed since 1718. This territory would await the next Habsburg-Ottoman war to be temporarily again included into the Habsburg Monarchy in 1788 with the help of Koča Anđelković. Treaty of Belgrade The Treaty of Belgrade, known as the Belgrade peace was the peace treaty signed on September 18, 1739 in Belgrade, Habsburg Kingdom of Serbia (today Serbia), by the Ottoman Empire on one side and the Habsburg Monarchy on the other, that ended the Austro–Turkish War (1737–39). This treaty ended the hostilities of the five-year Austro-Russian–Turkish War (1735–39), in which the Habsburgs