Following the Balkan Wars (1912–13) and the Treaties of London and Bucharest, which led to the Ottoman loss of most of the Balkans, Kosovo was governed as an integral part of the Kingdom of Serbia, while its western part (Metohija) by the Kingdom of Montenegro. In 1918 Montenegro was united with Serbia, first becoming an integral part of the Kingdom of Serbia, and shortly thereafter under Serbian rule joined the Kingdom of Serbs, Croats and Slovenes (KSHS), recognized in 1919 and 1920 at the Paris Peace Conference and the League of Nations and gaining a Constitution in 1921.
Following the Balkan Wars (1912–13) and the Treaties of London and Bucharest, which led to the Ottoman loss of most of the Balkans, Kosovo was integrated into Serbia. The western part of Kosovo (Metohija) came under the control of Montenegro. In 1918, Montenegro joined Serbia, becoming a part of the Kingdom of Serbia.  In 1919 and 1920, Montenegro was recognized as part of the Kingdom of Serbs, Croats and Slovenes (KSHS). It also gained a constitution in 1921.