Kingdom of Montenegro

The Kingdom of Montenegro (Serbian: Краљевина Црнa Горa / Kraljevina Crna Gora), was a monarchy in southeastern Europe during the tumultuous years on the Balkan Peninsula leading up to and during World War I. Legally it was a constitutional monarchy, but absolutist in practice. On 28 November 1918 Montenegro was unified with the Kingdom of Serbia, then three days later, on 1 December 1918, it was incorporated into the Kingdom of Serbs, Croats and Slovenes.