 After the death of Archduke Sigismund Francis in 1665, all Habsburg lands were again under the united rule of the Emperor Leopold I.From the time of Maria Theresa of Austria (1740−1780) onward, Tyrol was governed by the central government of the Habsburg Monarchy at Vienna in all matters of major importance.In 1803 the lands of the Bishoprics of Trent and Brixen were secularised and incorporated into the county.