The State of the Serbs, Croats and Slovenes, or the State of Jugoslavia, is one of the creations of the World War (1914-1918). It is composed of the former Kingdoms of Serbia and Montenegro, of the Southern Slavic provinces belonging to the former Austro-Hungarian Monarchy (see the Treaties of Peace of St. Germain of September 10, 1919, and of Trianon of June 4,1920), and of a certain part of the Bulgarian territory (see the Treaty of Neuilly of November 27, 1919). The Jugoslav State was founded by the Pact of Union of December 1, 1918 n.s. (signed at Belgrade, capital of the former state of Serbia, and now capital of Jugoslavia) and was subsequently recognized by the Treaties of Peace (1919-1920) which liquidated the World War, a3 well as by the neutrals.1 It secured its Constitution on June 28, 1921, whereby the State of Jugoslavia was to be a monarchy, in its nature constitutional (with the Karageorgevitch dynasty), parliamentary (of the unicameral type) and hereditary.