 The Habsburgs divided up their territories within the family twice, according to the 1379 Treaty of Neuberg and again in 1564.Each time, the Duchy of Carinthia became part of Inner Austria and was ruled jointly with the adjacent duchies of Styria and Carniola.Empress Maria Theresa of Austria and her son Joseph II attempted to create a more unitary Habsburg state, and in 1804 Carinthia was integrated into the newly established Austrian Empire under Francis II/I.