History of Austria
Austria was dominated by the House of Habsburg and House of Habsburg-Lorraine ("Haus Österreich") from 1273 to 1918. In 1808, when Emperor Francis II of Austria dissolved the Holy Roman Empire, Austria became the Austrian Empire, and was also part of the German Confederation until the Austro-Prussian War of 1866. In 1867, Austria formed a dual monarchy with Hungary: the Austro-Hungarian Empire (1867–1918). When this empire collapsed after the end of World War I in 1918, Austria was reduced to the main, mostly German-speaking areas of the empire (its current frontiers), and adopted the name The Republic of German-Austria. However the union and name were forbidden by the Allies at the Treaty of Versailles. This led to the creation of the First Austrian Republic (1918-1933).
Austrian Empire
The French victories encouraged rulers of certain imperial territories to ally themselves with the French and assert their formal independence from the Empire. On 10 December 1805, Maximilian IV Joseph, the prince-elector and Duke of Bavaria, proclaimed himself King, followed by the Duke of Württemberg Frederick III on 11 December. Charles Frederick, Margrave of Baden, was given the title of Grand Duke on 12 December. Each of these new states became French allies. The Treaty of Pressburg between France and Austria, signed in Pressburg (today Bratislava, Slovakia) on 26 December, enlarged the territory of Napoleon's German allies at the expense of defeated Austria.