Austria-Hungary (also known as the Austro-Hungarian Empire, Austro-Hungarian monarchy or k.u.k. Monarchy), more formally known as the Kingdoms and Lands Represented in the Imperial Council and the Lands of the Holy Hungarian Crown of Saint Stephen, was a constitutional
between the crowns of the Austrian Empire
and the Kingdom of Hungary
in Central Europe
. The union was a result of the Austro-Hungarian Compromise of 1867, under which the House of Habsburg agreed to share power with the separate Hungarian government, dividing the territory of the former Austrian Empire
1867 The ''Ausgleich'' results in the establishment of the Dual Monarchy of Austria-Hungary.
1867 The Austro-Hungarian agreement known as Ausgleich ("the Compromise") is born through Act 12, which establishes the Austro-Hungarian Empire; on June 8 Emperor Franz Joseph is crowned King of Hungary.
1879 Germany and Austria-Hungary sign the "Twofold Covenant" and create the Dual Alliance.
1882 The Triple Alliance between Germany, Austria-Hungary and Italy is formed.
1889 Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in Mayerling.
1914 Austria-Hungary issues an ultimatum to Serbia demanding Serbia to allow the Austrians to determine who assassinated Archduke Franz Ferdinand. Serbia will reject those demands and Austria will declare war on July 28.
1914 World War I: Austria-Hungary declares war on Serbia after Serbia rejects the conditions of an ultimatum sent by Austria on July 23 following the assassination of Archduke Francis Ferdinand.
1914 World War I: the United Kingdom declares war on Austria-Hungary; the countries of the British Empire follow suit.
1915 World War I: Italy joins the Allies after they declare war on Austria-Hungary.
1915 World War I: Italy declares war on Austria-Hungary.