Treaty of Neuberg
In the Treaty of Neuberg, concluded between the Habsburg Dukes Albert III and Leopold III on September 9, 1379 in Neuberg an der Mürz, the Habsburg lands were divided between the two brothers. While Albert retained the Archduchy of Austria, Leopold became the exclusive ruler of the Duchies of Styria (including the town of Wiener Neustadt), Carinthia, Carniola, the Windic march, the County of Gorizia and the Habsburgs' possessions in Friuli, Tyrol and Further Austria. With the treaty began a split between the Albertinian and Leopoldinian lines of the Habsburg families and the Austrian lands. While the Albertinian line became extinct in 1457, the territories were finally reunified in 1490, when Sigismund handed over the rulership of Tyrol to Archduke Maximilian I.