query: basic_form_of_government kingdom of serbia
supports: Hungary is a unitary parliamentary republic in Central Europe. It covers an area of , situated in the Carpathian Basin and bordered by Slovakia to the north, Romania to the east, Serbia to the south, Croatia to the southwest, Slovenia to the west, Austria to the northwest, and Ukraine to the northeast. With about 10 million inhabitants, Hungary is a medium-sized member state of the European Union. The official language is Hungarian, which is the most widely spoken Uralic language in the world. Hungary's capital and largest metropolis is Budapest, a significant economic hub, classified as an Alpha- global city. Major urban areas include Debrecen, Szeged, Miskolc, Pécs and Gyr. Bulgaria (tr. '), officially the Republic of Bulgaria (tr. '), is a country in southeastern Europe. It is bordered by Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, and the Black Sea to the east. With a territory of , Bulgaria is Europe's 16th-largest country. Serbia, officially the Republic of Serbia, is a sovereign state situated at the crossroads of Central and Southeast Europe, covering the southern part of the Pannonian Plain and the central Balkans. Relative to its small territory, it is a diverse country distinguished by a "transitional" character, situated along cultural, geographic, climatic and other boundaries. Serbia is landlocked and borders Hungary to the north; Romania and Bulgaria to the east; Macedonia to the south; and Croatia, Bosnia-Herzegovina, and Montenegro to the southwest; it also claims a border with Albania through the disputed territory of Kosovo. Serbia numbers around 7 million residents, and its capital, Belgrade, ranks among the largest cities in Southeast Europe. Pannonia was an ancient province of the Roman Empire bounded north and east by the Danube, coterminous westward with Noricum and upper Italy, and southward with Dalmatia and upper Moesia. Pannonia was located over the territory of the present-day western Hungary, eastern Austria, northern Croatia, north-western Serbia, northern Slovenia, western Slovakia and northern Bosnia and Herzegovina. Miloš Obrenovi (18 March 1780  26 September 1860) was Prince of Serbia from 1815 to 1839, and again from 1858 to 1860. He participated in the First Serbian Uprising, led Serbs in the Second Serbian Uprising, and founded the House of Obrenovi. Under his rule, Serbia became an autonomous principality within the Ottoman Empire. Prince Miloš ruled autocratically, permanently refusing to share power. During his rule, he was the richest man in Serbia and one of the richest in the Balkans. The Principality of Serbia was a semi-independent state in the Balkans that came into existence as a result of the Serbian Revolution which lasted between 1804 and 1817. Its creation was negotiated first through an "unwritten" agreement between Miloš Obrenovi, leader of the Second Serbian Uprising and Ottoman official Marashli Pasha. It was followed by the series of legal documents published by the Porte in 1828, 1829 and finally, 1830  the Hatt-i Sharif. Its "de facto" independence ensued in 1867, following the expulsion of all Ottoman troops from the country; Treaty of Berlin (1878) recognized its independence internationally. By 1882 the country was elevated to Kingdom of Serbia. The Treaty of Berlin was the final act of the Congress of Berlin (13 June  13 July 1878), by which the United Kingdom, Austria-Hungary, France, Germany, Italy, Russia and the Ottoman Empire under Sultan Abdul Hamid II revised the Treaty of San Stefano signed on 3 March the same year. The most important task of the Congress was to decide the fate of the Principality of Bulgaria established in the Treaty of San Stefano, even though Bulgaria itself was excluded from participation in the talks at Russian insistence. At the time, being non-existent on the world map, Bulgaria was not a subject of international law, neither were the Bulgarians themselves. This exclusion was already an established fact in the Constantinople Conference of the Great Powers, held one year before without any Bulgarian participation. The most notable result of the conference is the "de jure" recognition of "de facto" independent states of Romania, Serbia and Montenegro. Kosovo  is a disputed territory and partially recognised state in Southeast Europe that declared independence from Serbia in February 2008 as the Republic of Kosovo. Kosovo is landlocked in the central Balkan Peninsula. Its capital and largest city is Pristina. It is bordered by the Republic of Macedonia and Albania to the south, Montenegro to the west, and the uncontested territory of Serbia to the north and east. While Serbia recognises administration of the territory by Kosovo's elected government, it still continues to claim it as its own Autonomous Province of Kosovo and Metohija. The Second Serbian Uprising (18151817) was the second phase of the Serbian Revolution against the Ottoman Empire, which erupted shortly after the re-annexation of the country to the Ottoman Empire, in 1813. The occupation was enforced following the defeat of the First Serbian Uprising (18041813), during which Serbia existed as a "de facto" independent state for over a decade. The second revolution ultimately resulted in Serbian semi-independence from the Ottoman Empire. The Principality of Serbia was established, governed by its own parliament, constitution and royal dynasty. "De jure" independence followed during the second half of the 19th century. Croatia, officially the Republic of Croatia, is a sovereign state between Central Europe, Southeast Europe, and the Mediterranean. Its capital city is Zagreb, which forms one of the country's primary subdivisions, along with its twenty counties. Croatia covers and has diverse, mostly continental and Mediterranean climates. Croatia's Adriatic Sea coast contains more than a thousand islands. The country's population is 4.28 million, most of whom are Croats, with the most common religious denomination being Roman Catholicism. The Kingdom of Serbia ( Serbian :   / Kraljevina Srbija ) , often rendered Servia in English at the time of its existence , was created when Prince Milan Obrenovi , ruler of the Principality of Serbia , was crowned king in 1882 . The Principality of Serbia was ruled by the Obrenovi dynasty from 1817 onwards ( at times replaced by the Karaorevi dynasty ) . The Principality , suzerain to the Porte , had expelled all Ottoman troops by 1867 , de facto securing its independence . The Congress of Berlin in 1878 recognized the formal independence of the Principality of Serbia . Between 1912 - 1918 the country has enlarged its territory through its engagement in the Balkan wars ( First and Second Balkan War - Sandžak - Raška , Kosovo ) and as outcome of World War One , when it united with Vojvodina and southeastern parts of Serbia . Towards the end of 1918 , Serbia joined with the State of Slovenes , Croats and Serbs to form the Kingdom of Serbs , Croats and Slovenes ( later known as Yugoslavia ) under the rule of the Karaorevi dynasty . The Serbian Revolution was the national uprising and constitutional change in Serbia that took place between 1804 and 1835, during which this territory evolved from an Ottoman province into a rebel territory, a constitutional monarchy and a modern Serbia. The first part of the period, from 1804 to 1815, was marked by a violent struggle for independence from the Ottoman Empire with two armed uprisings taking place, ending with a ceasefire. The later period (18151835) witnessed a peaceful consolidation of political power of the increasingly autonomous Serbia, culminating in the recognition of the right to hereditary rule by Serbian princes in 1830 and 1833 and the territorial expansion of the young monarchy. The adoption of the first written Constitution in 1835 abolished feudalism and serfdom, and made the country suzerain. The term "Serbian Revolution" was coined by a German academic historiographer, Leopold von Ranke, in his book "Die Serbische Revolution", published in 1829. These events marked the foundation of modern Serbia. Albania (; ), officially the Republic of Albania, is a sovereign state in Southeastern Europe. It has a population of 3.03 million as of 2016. Tirana is the nation's capital and largest city, followed by Durrës and Vlorë. Albania is located in the south-western part of the Balkan peninsula, bordered by Montenegro to the northwest, Kosovo to the northeast, the Republic of Macedonia to the east, and Greece to the south and southeast. The country has a coastline on the northern shore of the Mediterranean Sea, the Adriatic Sea to the west and the Ionian Sea to the southwest where the Albanian Riviera begins. Albania is less than from Italy, across the Strait of Otranto which connects the Adriatic Sea to the Ionian Sea.
candidates: constitutional monarchy empire monarchy principality republic sultan
answer: constitutional monarchy