This is the NEDM Vandal speaking. I have returned for this very special day.
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- Antarctica is a de facto condominium, governed by parties to the Antarctic Treaty that have consulting status.
- The Moselle River and its tributaries, the Sauer and the Our, constitute a condominium between Luxembourg and Germany, which share bridges and at least the tip of one island, Staustufe Apach, near Schengen (the rest of the island is in France). The condominium was established by treaty in 1816.
- Pheasant Island (also known as Conference Island, Konpantzia in Basque, Île de la Conférence in French or Isla de los Faisanes in Spanish) in the River Bidassoa between France and Spain. It was established by the Treaty of the Pyrenees in 1659.
- El Salvador, Honduras and Nicaragua exercise a tridominium over parts of the Gulf of Fonseca and of the territorial sea outside its mouth.
- Austria and Germany consider themselves, together with Switzerland, to hold a tripartite condominium (albeit on different grounds) over the main part of Lake Constance (without its islands). On the other hand, Switzerland holds the view that the border runs through the middle of the lake. Hence no international treaty establishes where the borders of Switzerland, Germany, and Austria in or around Lake Constance lie.
- The part of the Paraná River between the Salto Grande de Sete Quedas and the mouth of the Iguassu River is shared in condominium by Brazil and Paraguay.
- Jamaica and Colombia share a maritime condominium (called a "Joint Regime Area") by mutual agreement as an alternative to delimiting their sea boundary. The outer portion of the EEZ of each country otherwise would overlap in this area. Unlike other "joint development zones", this condominium appears not to have been purposed simply as a way to divide oil, fisheries or other resources.
Under French law, Andorra was once considered to be a French–Spanish condominium, although it is more commonly classed as a co-principality, since it is itself a sovereign state, not a possession of one or more foreign powers. However, the position of Head of State is shared ex officio by two foreigners, one of whom is the President of France, currently François Hollande, and the other the Bishop of Urgell in Spain, Joan Enric Vives Sicília.
- In 688 the Byzantine Emperor Justinian II and the Arab Caliph Abd al-Malik ibn Marwan reached an unprecedented agreement to establish a condominium (the concept did not yet exist) over Cyprus, with the collected taxes from the island being equally divided between the two parties. The arrangement lasted for some 300 years, even though in the same time there was nearly constant warfare between the two parties on the mainland.
- In the early 9th century, the Serbian princedom was a condominium of the Frankish Empire and the Byzantine Empire.
- Anglo-Egyptian Sudan was legally an Egyptian-British condominium from 1899 until 1956, although in reality Egypt played no role in its government other than providing some administrators in the country: all political decisions were made by the UK and all Governors-General of the Anglo-Egyptian Sudan were British. Though the system was resented by Egyptian and Sudanese nationalists, and would later be disavowed by the Egyptian Government, it persisted due to the United Kingdom's effective control over Egypt itself, which began from 1882 and continued until at least 1936.
- The Condominium of Bosnia and Herzegovina was jointly ruled by Cisleithanian Austria and Hungary between 1908 and 1918, while both countries were parts of the Austro-Hungarian Empire.
- An islet in the border river Brömsebäck was considered to belong to neither (or both) Denmark and Sweden.
- The Independent State of Croatia during World War II from 1941 to 1943 was a condominium of Nazi Germany and Fascist Italy until the collapse of the Italian Fascist regime in 1943.
- Canton and Enderbury Islands were a British–American condominium from 1939 until 1979 when they became part of Kiribati
- Couto Misto was shared until 1864 between Spain and Portugal, even though in its final decades of existence it was de facto independent.
- Countship of Friesland (West Frisia), since 1165 under Imperial administration, was from 1165 to 1493 a joint condominium of the Count of Holland and the Prince-bishop of Utrecht, then again until 25 October 1555 under Imperial administration.
- Egypt from 1876–1882 was under France and the United Kingdom.
- The city of Erfurt from 12th century until the Thirty Years' War was shared between the Archbishopric of Mainz and the Counts of Gleichen, the latter replaced by the city council in 1289 (Concordata Gebhardi), the Landgrave of Thuringia in 1327 and the House of Wettin in 1483 (Treaty of Weimar).
- A small area (Hadf and surroundings) on the Arabian Peninsula, a part of Oman, at one time was jointly ruled with the Emirati member state of Ajman. The agreement defining the Hadf zone was signed in Salalah on 26 April 1960 by Sultan Said bin Taimur and in Ajman on 30 April 1960 by Shaikh Rashid bin Humaid al-Nuaimi, ruler of Ajman. This provided for some joint supervision in the zone by the ruler of Ajman and the shaikhs under the rule of Muscat. It allowed the Ajman ruler to continue collecting zakat (Islamic tax). The ruler of Ajman was, however, not to interfere in the affairs of the local people, the Bani Ka'ab (a branch of the Banu Kaab), which were the sole responsibility of shaikhs who were under Muscat rule. The agreement was later terminated.
- The Free City of Kraków was a protectorate of Prussia, Austria and Russia from 1815 until 1846, when it was annexed by Austria
- Maastricht was a condominium for five centuries until 1794. It was shared between the Prince-Bishopric of Liège and the Duchy of Brabant, the latter replaced by the Dutch Republic in 1632
- Nauru was a tripartite condominium mandate territory administered by Australia, New Zealand and United Kingdom from 1923 to 1942 and again in 1947 as a trust territory until independence in 1968
- The village of Nennig was a condominium of the Trier bishopric, Lorraine (the Kingdom of France from 1766) and Luxembourg until its annexation by Revolutionary France in 1794
- Neutral Moresnet was shared from 1816 until 1919 between the Netherlands (later Belgium) and Prussia
- New Hebrides formed a French–British condominium in 1906 until independence in 1980 as a republic, now called Vanuatu
- Northern Dobruja was shared by the Central powers (German-Austrian-Bulgarian) during World War I.
- Oregon Country was an Anglo-American condominium from 1818 until 1846
- Samoan Islands from 1889 to 1899 were a rare tripartite condominium under joint protectorate of Germany, Britain and the United States.
- The Province of Schleswig-Holstein was at first administered jointly by Prussia and Austria following the 1864 Second Schleswig War until its partition according to the Gastein Convention in the next year
- The County of Sponheim in the Holy Roman Empire was ruled since the 15th century by the Margraves of Baden, the Counts Palatine of the Rhine and the Counts of Veldenz, later Palatinate-Simmern, Palatinate-Zweibrücken and Palatinate-Birkenfeld as heirs of Veldenz.
- The Spanish Netherlands became an Anglo-Dutch condominium in 1706 during the War of the Spanish Succession, until the peace treaties of Utrecht and Rastatt in 1713/14 ending the war.
- Togoland, formerly a German protectorate, was an Anglo-French condominium, from when the United Kingdom and France occupied it on 26 August 1914 until its partition on 27 December 1916 into French and British zones. The divided Togoland became two separate League of Nations mandates on 20 July 1922: British Togoland, which joined Gold Coast (present day Ghana) in 1956, and French Togoland, which is now the nation of Togo.
- Zaporozhian Sich, a brief Russo-Polish condominium, was established in 1667 by the Treaty of Andrusovo.
- The term is sometimes even applied to a similar arrangement between members of a Monarch's countries in (personal or formal) union, as was the case for the district of Fiume (Rijeka), shared between Hungary and Croatia within the Habsburg Empire since 1868.
- Between 1913 and 1920 Spitsbergen was a neutral condominium. The Spitsbergen Treaty of 9 February 1920 recognises the full and absolute sovereignty of Norway over all the arctic archipelago of Svalbard. The exercise of sovereignty is, however, subject to certain stipulations, and not all Norwegian law applies. Originally limited to nine signatory nations, over 40 are now signatories of the treaty. Citizens of any of the signatory countries may settle in the archipelago. Currently, only Norway and Russia make use of this right.
- In 1992, South Africa and Namibia established a Joint Administrative Authority in the enclave of Walvis Bay, prior to its cession to Namibia in 1994.
- In 2001, the British government held discussions with Spain with a view to putting a proposal for joint sovereignty to the people of Gibraltar. This initiative was pre-emptively rejected by Gibraltarians in the 2002 referendum.
- In 2012, the Canadian and Danish governments were close to an agreement to declare Hans Island a condominium, after decades in dispute. Another considered alternative was to divide the island in half. Negotiations continued.
- Hypothetical condominia have been proposed for Jerusalem (Israel-Palestine) within the framework of Palestinian independence.
- In the talks between the UK and the People's Republic of China in 1983–84, one of British proposals was to transfer the sovereignty of Hong Kong and its dependencies to the People's Republic of China, whereas the UK would retain the rights of administration of the dependent territory. The negotiations ended with the UK agreeing to relinquishing all rights over Hong Kong to China in 1997.
- In one proposed case of the Partition of Belgium, Brussels would become a condominium of Flanders and Wallonia.
- ↑ "Select DEFRLUBEDELU.PDF (Map of condominium boundaries)". Retrieved 2013-06-02.
- ↑ Gómez Cruz, Ricardo Alonso (October 2004). Elementos Jurídicos para la Construcción de una Propuesta Tendente a la Recuperación Material y la Soberanía de la Isla Conejo en el Golfo de Fonseca (Legal Elements for the Construction of a Proposal to the Material Recovery and Sovereignty of Isla Conejo in the Gulf of Fonseca) (PDF) (Thesis). Universidad de El Salvador, Ciudad Universitaria, San Salvador, El Salvador. p. 33, 36, 46, 49 and 50. Retrieved 2013-07-04.
- ↑ Case Concerning Land, Island, and Maritime Frontier Dispute (El Salvador/Honduras, Nicaragua Intervening) (International Court of Justice 1992). Text
- ↑ Huezo Urquilla, Luis Salvador (July 1993). La controversia fronteriza terrestre, insular y maritima entre El Salvador y Honduras, y Nicaragua como país interviniente (Thesis). Universidad Dr. José Matías Delgado, San Salvador, El Salvador. Retrieved 2013-07-14.
- ↑ Daniel-Erasmus Kahn (2004). Die deutschen Staatsgrenzen: rechtshistorische Grundlagen und offene Rechtsfragen ("The German national borders: legal-historical foundations and open legal questions"). Oxford University Press. ISBN 9783161484032.
- ↑ 6.0 6.1 Smith, Barry. "Fiat Objects" (PDF). Department of Philosophy, Center for Cognitive Science and NCGIA, SUNY at Buffalo (NY): 24–25. Retrieved 2013-06-02.
- ↑ Coprince d'Andorre, Hollande rend visite à la principauté, Le Parisien, 12 June 2014
- ↑ Jozo Tomasevich. "The Chetniks". War and Revolution in Yugoslavia. Stanford University Press, 1975. Pp. 103. "The condominium in Croatia was the most important example of Italo-German collaboration in controlling and despoiling an occupied area [...]".
- ↑ Stephen R. Graubard, (ed.).Exit from Communism. Transaction Publishers, 1993. Pp. 153–154. "After the Axis attack on Yugoslavia in 1941, Mussolini and Hitler installed the Ustašas in power in Zagreb, making them the nucleus of a dependent regime of the newly created Independent State of Croatia, an Italo-German condominium predicated on the abolition of Yugoslavia." 
- ↑ Günay Göksu Özdoğan, Kemâli Saybaşılı. Balkans: a mirror of the new international order. Marmara Üniversitesi. Dept. of International Relations, 1995. Pp. 143. "Croatia (with Bosnia-Hercegovina) formally became a new Axis ally – the Independent State of Croatia (NDH). This was in fact, Italo-German condominium, [...]".
- ↑ John R. Lampe (ed.), Mark Mazower (ed.). Ideologies and National Identities: The Case of Twentieth-Century Southeastern Europe. Central European University Press, 2003. Pp. 103. "[...] the Independent State of Croatia (hereafter NDH, Nezavisna Drzava Hrvatska), in reality an Italo-German condominium[...]"
- ↑ http://www.minefe.gouv.fr/fonds_documentaire/notes_bleues/nbb/nbb270/entente_cordiale.pdf
- ↑ The UAE: Internal Boundaries and the Boundary with Oman. 6. pp. 477–478. ISBN 1-85207-575-9.
- ↑ "Ajman/Muscat condominium".
I don't know when the Hadf zone agreement was terminated, but it certainly was.
- ↑ 
- ↑ Bromley, J S (editor) 1970, The New Cambridge Modern History Volume 6: The Rise of Great Britain and Russia, 1688-1715/25, Cambridge University Press, ISBN 978-0521075244 (p. 428)
- ↑ Namibia Yearbook, Issue 3, pages 18
- ↑ CIA – The World Factbook – Gibraltar US Central Intelligence Agency
- ↑ BBC News | Europe | Country profiles | Regions and territories: Gibraltar BBC News