Transylvania the Romanian population of Transylvania gathered in Alba Iulia on 1 December 1918 to proclaim the union of Transylvania with the Kingdom of Romania. In Transylvania, there are many medieval smaller towns such as Sighișoara, Mediaș, Sebeș, and Bistrița. Official censuses with information on Transylvania's population have been conducted since the 18th century. On May 1, 1784 the Emperor Joseph II called for the first official census of the Habsburg Empire, including Transylvania. The data was published in 1787, and this census showed only the overall population (1,440,986 inhabitants). , a 19th-century Hungarian statistician, estimated in 1842 that in the
Transylvania For most of this period, Transylvania, maintaining its internal autonomy, was under the suzerainty of the Ottoman Empire. The Habsburgs acquired the territory shortly after the Battle of Vienna in 1683. In 1687, the rulers of Transylvania recognized the suzerainty of the Habsburg emperor Leopold I, and the region was officially attached to the Habsburg Empire. The Habsburgs acknowledged Principality of Transylvania as one of the Lands of the Crown of Saint Stephen, but the territory of principality was administratively separated from Habsburg Hungary and subjected to the direct rule of the emperor's governors. In 1699 the Turks legally acknowledged