international relations International relations (IR, and also referred to as international studies, international politics, or international affairs) is an academic discipline. In a broader sense, the study of IR, in addition to multilateral relations, concerns al ...

, a partition is a division of a previously unified territory into two or more parts. Brendan O'Leary distinguishes partition, a change of political borders cutting through at least one territory considered a

homeland A homeland is a place where a national or ethnic identity has formed. The definition can also mean simply one's country of birth. When used as a proper noun, the Homeland, as well as its equivalents in other languages, often has ethnic natio ...

by some community, from

secession Secession is the formal withdrawal of a group from a Polity, political entity. The process begins once a group proclaims an act of secession (such as a declaration of independence). A secession attempt might be violent or peaceful, but the goal i ...

, which takes place within existing recognized political units.Brendan O'Leary
DEBATING PARTITION: JUSTIFICATIONS AND CRITIQUES
For Arie Dubnov and Laura Robson, partition is the physical division of territory along ethno-religious lines into separate

nation-state A nation state, or nation-state, is a political entity in which the state (a centralized political organization ruling over a population within a territory) and the nation (a community based on a common identity) are (broadly or ideally) con ...

History

Dubnov and Robson locate partition in the context of post-

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

peacebuilding and the "new conversations surrounding ethnicity, nationhood, and citizenship" that emerged out of it. The post-war agreements, such as the League of Nations mandate system, promoted "a new political language of ethnic separatism as a central aspect of national

self-determination Self-determination refers to a people's right to form its own political entity, and internal self-determination is the right to representative government with full suffrage. Self-determination is a cardinal principle in modern international la ...

, while protecting and disguising continuities and even expansions of French and, especially, British imperial powers. After

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

, they argue, partition transformed from "an imperial tactic into an organizing principle" of world diplomacy". Ranabir Samaddar agrees that partition gained prominence following World War I, particularly with the partition of the Ottoman Empire and the Dissolution of Austria-Hungary, resulting from competing national ambitions. By this point, he argues,

ethnicity An ethnicity or ethnic group is a group of people with shared attributes, which they Collective consciousness, collectively believe to have, and long-term endogamy. Ethnicities share attributes like language, culture, common sets of ancestry, ...

had become the primary justification of border proposals. Scholarship has closely linked partition to violence. Tracing the precedent for the

Partition of Ireland The Partition of Ireland () was the process by which the Government of the United Kingdom of Great Britain and Ireland (UK) divided Ireland into two self-governing polities: Northern Ireland and Southern Ireland (the area today known as the R ...

in population resettlements across former Ottoman Empire territories and the making of national 'majorities' and 'minorities', Dubnov and Robson emphasise how partitions after Ireland contained proposals to transfer "inconvenient populations in addition to forcible territorial division into separate states," which they note had violent consequences for local actors who were devolved the task of "carving out physically separate political entities on the ground and making them ethnically homogenous". T.G. Fraser notes that Britain proposed partition in both

Ireland Ireland (, ; ; Ulster Scots dialect, Ulster-Scots: ) is an island in the North Atlantic Ocean, in Northwestern Europe. Geopolitically, the island is divided between the Republic of Ireland (officially Names of the Irish state, named Irelan ...

and

Palestine Palestine, officially the State of Palestine, is a country in West Asia. Recognized by International recognition of Palestine, 147 of the UN's 193 member states, it encompasses the Israeli-occupied West Bank, including East Jerusalem, and th ...

as a method of resolving conflict between competing national groups, but in neither case did it end communal violence. Rather, Fraser argues, partition merely gave these conflicts a "new dimension". Similarly, A. Dirk Moses asserts partition does not "so much solve minority issues as deposit them into different containers as minority issues reappear in partitioned units", rejecting what he calls "divine cartographies" that seek to "neatly map peoples as naturally emplaced in their homelands" for disregarding the heterogeneous reality of identity in the real world.

Arguments for

* historicist – that partition is inevitable, or already in progress * last resort – that partition should be pursued to avoid the worst outcomes (

genocide Genocide is violence that targets individuals because of their membership of a group and aims at the destruction of a people. Raphael Lemkin, who first coined the term, defined genocide as "the destruction of a nation or of an ethnic group" by ...

or large-scale ethnic expulsion), if all other means fail * cost–benefit – that partition offers a better prospect of conflict reduction than if the existing borders are not changed * better tomorrow – that partition will reduce current violence and conflict, and that the new more homogenized states will be more stable * rigorous end – heterogeneity leads to problems, hence homogeneous states should be the goal of any policy

Arguments against

* national territorial unity will be lost * bi-nationalism and multi-nationalism are not undesirable * the impossibility of a just partition * difficult in deciding how the new border(s) will be drawn * the likelihood of disorder and violence * partitioning alone does not lead to the desired homogenization * security issues arising within the borders of the new states Daniel Posner has argued that partitions of diverse communities into homogenous communities is unlikely to solve problems of communal conflict, as the boundary changes will alter the actors' incentives and give rise to new cleavages. For example, while the Muslim and Hindu cleavages might have been the most salient amid the

Indian independence movement The Indian independence movement was a series of historic events in South Asia with the ultimate aim of ending British Raj, British colonial rule. It lasted until 1947, when the Indian Independence Act 1947 was passed. The first nationalistic ...

, the creation of a religiously homogenous Hindu state (

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

) and a religiously homogeneous Muslim state (

Pakistan Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country# ...

) created new social cleavages on lines other than religion in both of those states. Posner writes that relatively homogenous countries can be more violence-prone than countries with a large number of evenly matched ethnic groups.

Examples

Europe and the Middle East

* Partition, multiple times, of the

Roman Empire The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...

into the Eastern and

Western Roman Empire In modern historiography, the Western Roman Empire was the western provinces of the Roman Empire, collectively, during any period in which they were administered separately from the eastern provinces by a separate, independent imperial court. ...

, following the

Crisis of the Third Century The Crisis of the Third Century, also known as the Military Anarchy or the Imperial Crisis, was a period in History of Rome, Roman history during which the Roman Empire nearly collapsed under the combined pressure of repeated Barbarian invasions ...

. * Partition of Prussia by the Second Peace of Thorn in 1466. creating Royal Prussia, and

Duchy of Prussia The Duchy of Prussia (, , ) or Ducal Prussia (; ) was a duchy in the region of Prussia established as a result of secularization of the Monastic Prussia, the territory that remained under the control of the State of the Teutonic Order until t ...

in 1525 * Partition of

Catalonia Catalonia is an autonomous community of Spain, designated as a ''nationalities and regions of Spain, nationality'' by its Statute of Autonomy of Catalonia of 2006, Statute of Autonomy. Most of its territory (except the Val d'Aran) is situate ...

by the Treaty of the Pyrenees in 1659: Northern Catalan territories (

Roussillon Roussillon ( , , ; , ; ) was a historical province of France that largely corresponded to the County of Roussillon and French Cerdagne, part of the County of Cerdagne of the former Principality of Catalonia. It is part of the region of ' ...

) were given to

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

Spain Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...

. * In the Treaty of Versailles (1757), France and Austria agreed upon the partition of Prussia *

German occupation of Czechoslovakia German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...

: The

Sudetenland The Sudetenland ( , ; Czech and ) is a German name for the northern, southern, and western areas of former Czechoslovakia which were inhabited primarily by Sudeten Germans. These German speakers had predominated in the border districts of Bohe ...

was ceded to

Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...

under the

Munich Agreement The Munich Agreement was reached in Munich on 30 September 1938, by Nazi Germany, the United Kingdom, the French Third Republic, French Republic, and the Kingdom of Italy. The agreement provided for the Occupation of Czechoslovakia (1938–194 ...

of 1938, and the country was later divided into the German-administered

Protectorate of Bohemia and Moravia The Protectorate of Bohemia and Moravia was a partially-annexation, annexed territory of Nazi Germany that was established on 16 March 1939 after the Occupation of Czechoslovakia (1938–1945), German occupation of the Czech lands. The protector ...

and the nominally independent

Slovak Republic Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the west, and the Czech Republic to the northwest. Slovakia's ...

; later reunified at the end of

. * Three Partitions of Luxembourg, the last of which in 1839, divided Luxembourg between France, Prussia, Belgium, and the independent

Grand Duchy of Luxembourg Luxembourg, officially the Grand Duchy of Luxembourg, is a landlocked country in Western Europe. It is bordered by Belgium to the west and north, Germany to the east, and France on the south. Its capital and most populous city, Luxembourg ...

. * Three

Partitions of Poland The Partitions of Poland were three partition (politics), partitions of the Polish–Lithuanian Commonwealth that took place between 1772 and 1795, toward the end of the 18th century. They ended the existence of the state, resulting in the eli ...

in 1772, 1793, and 1795, which led to the complete annihilation of the

Polish–Lithuanian Commonwealth The Polish–Lithuanian Commonwealth, also referred to as Poland–Lithuania or the First Polish Republic (), was a federation, federative real union between the Crown of the Kingdom of Poland, Kingdom of Poland and the Grand Duchy of Lithuania ...

. * The Treaty of Bucharest in 1913 partitioned the region of

Macedonia Macedonia (, , , ), most commonly refers to: * North Macedonia, a country in southeastern Europe, known until 2019 as the Republic of Macedonia * Macedonia (ancient kingdom), a kingdom in Greek antiquity * Macedonia (Greece), a former administr ...

between

Serbia , image_flag = Flag of Serbia.svg , national_motto = , image_coat = Coat of arms of Serbia.svg , national_anthem = () , image_map = , map_caption = Location of Serbia (gree ...

(now

North Macedonia North Macedonia, officially the Republic of North Macedonia, is a landlocked country in Southeast Europe. It shares land borders with Greece to the south, Albania to the west, Bulgaria to the east, Kosovo to the northwest and Serbia to the n ...

Greece Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to th ...

and

Bulgaria Bulgaria, officially the Republic of Bulgaria, is a country in Southeast Europe. It is situated on the eastern portion of the Balkans directly south of the Danube river and west of the Black Sea. Bulgaria is bordered by Greece and Turkey t ...

. * Partition of

Tyrol Tyrol ( ; historically the Tyrole; ; ) is a historical region in the Alps of Northern Italy and western Austria. The area was historically the core of the County of Tyrol, part of the Holy Roman Empire, Austrian Empire and Austria-Hungary, f ...

by the London Pact of 1915 ratified during

. * Partition of the

German Empire The German Empire (),; ; World Book, Inc. ''The World Book dictionary, Volume 1''. World Book, Inc., 2003. p. 572. States that Deutsches Reich translates as "German Realm" and was a former official name of Germany. also referred to as Imperia ...

in 1919 by the

Treaty of Versailles The Treaty of Versailles was a peace treaty signed on 28 June 1919. As the most important treaty of World War I, it ended the state of war between Germany and most of the Allies of World War I, Allied Powers. It was signed in the Palace ...

. *Partition of

Prussia Prussia (; ; Old Prussian: ''Prūsija'') was a Germans, German state centred on the North European Plain that originated from the 1525 secularization of the Prussia (region), Prussian part of the State of the Teutonic Order. For centuries, ...

in 1919. * Partition of the Ottoman Empire. * Partition of the

Austro-Hungarian Empire Austria-Hungary, also referred to as the Austro-Hungarian Empire, the Dual Monarchy or the Habsburg Monarchy, was a multi-national constitutional monarchy in Central Europe between 1867 and 1918. A military and diplomatic alliance, it consist ...

by the Treaty of Saint-Germain-en-Laye and the

Treaty of Trianon The Treaty of Trianon (; ; ; ), often referred to in Hungary as the Peace Dictate of Trianon or Dictate of Trianon, was prepared at the Paris Peace Conference (1919–1920), Paris Peace Conference. It was signed on the one side by Hungary ...

. *

in 1920 into

Northern Ireland Northern Ireland ( ; ) is a Countries of the United Kingdom, part of the United Kingdom in the north-east of the island of Ireland. It has been #Descriptions, variously described as a country, province or region. Northern Ireland shares Repub ...

and Southern Ireland **This partition was only partially implemented as, following the

Irish War of Independence The Irish War of Independence (), also known as the Anglo-Irish War, was a guerrilla war fought in Ireland from 1919 to 1921 between the Irish Republican Army (1919–1922), Irish Republican Army (IRA, the army of the Irish Republic) and Unite ...

, Southern Ireland became the

Irish Free State The Irish Free State (6 December 192229 December 1937), also known by its Irish-language, Irish name ( , ), was a State (polity), state established in December 1922 under the Anglo-Irish Treaty of December 1921. The treaty ended the three-ye ...

* Treaty of Kars of 1921, which partitioned

Armenia Armenia, officially the Republic of Armenia, is a landlocked country in the Armenian Highlands of West Asia. It is a part of the Caucasus region and is bordered by Turkey to the west, Georgia (country), Georgia to the north and Azerbaijan to ...

between

Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...

and the

Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...

(Western and Eastern Armenia). * Partition of

Allied-occupied Germany The entirety of Germany was occupied and administered by the Allies of World War II, from the Berlin Declaration on 5 June 1945 to the establishment of West Germany on 23 May 1949. Unlike occupied Japan, Nazi Germany was stripped of its sov ...

and

Berlin Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...

after

** The

Morgenthau Plan The Morgenthau Plan was a proposal to weaken Germany following World War II by eliminating its arms industry and removing or destroying other key industries basic to military strength. This included the removal or destruction of all industria ...

proposed independent states in North and South Germany, an international zone in the

Ruhr Area The Ruhr ( ; , also ''Ruhrpott'' ), also referred to as the Ruhr Area, sometimes Ruhr District, Ruhr Region, or Ruhr Valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 1,160/km2 and a populati ...

, and the transfer of disputed border areas to

and

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...

** The actual post-war settlement created

West Germany West Germany was the common English name for the Federal Republic of Germany (FRG) from its formation on 23 May 1949 until German reunification, its reunification with East Germany on 3 October 1990. It is sometimes known as the Bonn Republi ...

and

East Germany East Germany, officially known as the German Democratic Republic (GDR), was a country in Central Europe from Foundation of East Germany, its formation on 7 October 1949 until German reunification, its reunification with West Germany (FRG) on ...

and included the annexation of

former eastern territories of Germany In present-day Germany, the former eastern territories of Germany () refer to those territories east of the current eastern border of Germany, i.e. the Oder–Neisse line, which historically had been considered German and which were annexed b ...

and the

. Later, East and West Germany were unified at the end of the

Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...

. ** Partition of

East Prussia East Prussia was a Provinces of Prussia, province of the Kingdom of Prussia from 1772 to 1829 and again from 1878 (with the Kingdom itself being part of the German Empire from 1871); following World War I it formed part of the Weimar Republic's ...

between Poland and the Soviet Union * The 1947

United Nations Partition Plan for Palestine The United Nations Partition Plan for Palestine was a proposal by the United Nations to partition Mandatory Palestine at the end of the British Mandate. Drafted by the U.N. Special Committee on Palestine (UNSCOP) on 3 September 1947, the Pl ...

was never fully implemented **Following the expiration of the British Mandate,

David Ben-Gurion David Ben-Gurion ( ; ; born David Grün; 16 October 1886 – 1 December 1973) was the primary List of national founders, national founder and first Prime Minister of Israel, prime minister of the State of Israel. As head of the Jewish Agency ...

declared the establishment of a Jewish state in unspecified borders **The 1948 Palestine war and 1949 Armistice Agreements resulted in the territories of the proposed Arab state in the 1947 plan being occupied by Israel, Transjordan, and

Egypt Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...

. *

Breakup of Yugoslavia After a period of political and economic crisis in the 1980s, the constituent republics of the Socialist Federal Republic of Yugoslavia split apart in the early 1990s. Unresolved issues from the breakup caused a series of inter-ethnic Yugoslav ...

in the 1990s. ** Independence of

Croatia Croatia, officially the Republic of Croatia, is a country in Central Europe, Central and Southeast Europe, on the coast of the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, Bosnia and Herze ...

Bosnia and Herzegovina Bosnia and Herzegovina, sometimes known as Bosnia-Herzegovina and informally as Bosnia, is a country in Southeast Europe. Situated on the Balkans, Balkan Peninsula, it borders Serbia to the east, Montenegro to the southeast, and Croatia to th ...

and

Slovenia Slovenia, officially the Republic of Slovenia, is a country in Central Europe. It borders Italy to the west, Austria to the north, Hungary to the northeast, Croatia to the south and southeast, and a short (46.6 km) coastline within the Adriati ...

from

Yugoslavia , common_name = Yugoslavia , life_span = 1918–19921941–1945: World War II in Yugoslavia#Axis invasion and dismemberment of Yugoslavia, Axis occupation , p1 = Kingdom of SerbiaSerbia , flag_p ...

(leaving

Serbia and Montenegro The State Union of Serbia and Montenegro or simply Serbia and Montenegro, known until 2003 as the Federal Republic of Yugoslavia and commonly referred to as FR Yugoslavia (FRY) or simply Yugoslavia, was a country in Southeast Europe locate ...

). ** Failed partition of the Republic of Serbian Krajina in Croatia after the Croatian War ** Ethno-political partition of Bosnia and Herzegovina into two entities, the Serb-majority

Republika Srpska Republika Srpska ( sr-Cyrl, Република Српска, ; also referred to as the Republic of Srpska or Serb Republic) is one of the two Political divisions of Bosnia and Herzegovina, entities within Bosnia and Herzegovina, the other bein ...

and the

Bosniak The Bosniaks (, Cyrillic script, Cyrillic: Бошњаци, ; , ) are a South Slavs, South Slavic ethnic group native to the Southeast European historical region of Bosnia (region), Bosnia, today part of Bosnia and Herzegovina, and who sha ...

Croat The Croats (; , ) are a South Slavs, South Slavic ethnic group native to Croatia, Bosnia and Herzegovina and other neighboring countries in Central Europe, Central and Southeastern Europe who share a common Croatian Cultural heritage, ancest ...

-majority

Federation of Bosnia and Herzegovina The Federation of Bosnia and Herzegovina (Serbo-Croatian: ''Federacija Bosne i Hercegovine'' / ''Федерација Босне и Херцеговине'') is one of the two Political divisions of Bosnia and Herzegovina, entities composing Bo ...

, after the

Bosnian War The Bosnian War ( / Рат у Босни и Херцеговини) was an international armed conflict that took place in Republic of Bosnia and Herzegovina, Bosnia and Herzegovina between 1992 and 1995. Following several earlier violent incid ...

. * Partition of Czechoslovakia in 1993 into the independent entities of the

Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...

and

Slovakia Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the west, and the Czech Republic to the northwest. Slovakia's m ...

. * Partition of Cyprus in 1974 (''de facto''), into

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

-majority

Cyprus Cyprus (), officially the Republic of Cyprus, is an island country in the eastern Mediterranean Sea. Situated in West Asia, its cultural identity and geopolitical orientation are overwhelmingly Southeast European. Cyprus is the List of isl ...

and Turkish-majority

Northern Cyprus Northern Cyprus, officially the Turkish Republic of Northern Cyprus (TRNC), is a ''de facto'' state that comprises the northeastern portion of the Geography of Cyprus, island of Cyprus. It is List of states with limited recognition, recognis ...

after the

Turkish invasion of Cyprus The Turkish invasion of Cyprus began on 20 July 1974 and progressed in two phases over the following month. Taking place upon a background of Cypriot intercommunal violence, intercommunal violence between Greek Cypriots, Greek and Turkish Cy ...

. * Possible Partition of Kosovo after disputed independence (partition from

Serbia , image_flag = Flag of Serbia.svg , national_motto = , image_coat = Coat of arms of Serbia.svg , national_anthem = () , image_map = , map_caption = Location of Serbia (gree ...

) in 2008. See also Kosovo independence precedent.

Everywhere else

* Partition of Africa (Scramble for Africa), between 1881 and 1914 under the General Act of the

Berlin Conference The Berlin Conference of 1884–1885 was a meeting of colonial powers that concluded with the signing of the General Act of Berlin,

. * Partition of the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

Virginia Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...

in 1863 after Virginia joined the Confederacy in the

American Civil War The American Civil War (April 12, 1861May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States between the Union (American Civil War), Union ("the North") and the Confederate States of A ...

, 50 northwestern counties rejoined the Union as the State of

West Virginia West Virginia is a mountainous U.S. state, state in the Southern United States, Southern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States.The United States Census Bureau, Census Bureau and the Association of American ...

. * 1947 Partition of Punjab into East Punjab and West Punjab. * 1905 Partition of Bengal and 1947 Partition of Bengal into

East Bengal East Bengal (; ''Purbô Bangla/Purbôbongo'') was the eastern province of the Dominion of Pakistan, which covered the territory of modern-day Bangladesh. It consisted of the eastern portion of the Bengal region, and existed from 1947 until 195 ...

and

West Bengal West Bengal (; Bengali language, Bengali: , , abbr. WB) is a States and union territories of India, state in the East India, eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabi ...

. * Partition of Korea in 1945 into American and Soviet zones of occupation. **

Division of Korea The division of Korea began at the end of World War II on 2 September 1945, with the establishment of a Soviet occupation zone and a US occupation zone. These zones developed into separate governments, named the Democratic People's Republic of ...

in 1953 between

North Korea North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korea, Korean Peninsula and borders China and Russia to the north at the Yalu River, Yalu (Amnok) an ...

and

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...

after the

Korean War The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was s ...

. *

Partition of India The partition of India in 1947 was the division of British India into two independent dominion states, the Dominion of India, Union of India and Dominion of Pakistan. The Union of India is today the Republic of India, and the Dominion of Paki ...

( colonial British India) in 1947 into the independent

dominion A dominion was any of several largely self-governance, self-governing countries of the British Empire, once known collectively as the ''British Commonwealth of Nations''. Progressing from colonies, their degrees of self-governing colony, colon ...

s (later republics) of

and

(which included modern-day Bangladesh). * Partition of China after the

Chinese Civil War The Chinese Civil War was fought between the Kuomintang-led Nationalist government, government of the Republic of China (1912–1949), Republic of China and the forces of the Chinese Communist Party (CCP). Armed conflict continued intermitt ...

in 1946–1950 separated the original territory of the

Republic of China Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...

into the

People's Republic of China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

Mainland China "Mainland China", also referred to as "the Chinese mainland", is a Geopolitics, geopolitical term defined as the territory under direct administration of the People's Republic of China (PRC) in the aftermath of the Chinese Civil War. In addit ...

and the

on Taiwan and other island groups. * Partition of Punjab in 1966 into the states of

Punjab Punjab (; ; also romanised as Panjāb or Panj-Āb) is a geopolitical, cultural, and historical region in South Asia. It is located in the northwestern part of the Indian subcontinent, comprising areas of modern-day eastern Pakistan and no ...

Haryana Haryana () is a States and union territories of India, state located in the northern part of India. It was carved out after the linguistic reorganisation of Punjab, India, Punjab on 1 November 1966. It is ranked 21st in terms of area, with les ...

and

Himachal Pradesh Himachal Pradesh (; Sanskrit: ''himācāl prādes;'' "Snow-laden Mountain Province") is a States and union territories of India, state in the northern part of India. Situated in the Western Himalayas, it is one of the thirteen Indian Himalayan ...

. * Partition of Vietnam in 1954 between

North Vietnam North Vietnam, officially the Democratic Republic of Vietnam (DRV; ; VNDCCH), was a country in Southeast Asia from 1945 to 1976, with sovereignty fully recognized in 1954 Geneva Conference, 1954. A member of the communist Eastern Bloc, it o ...

and

South Vietnam South Vietnam, officially the Republic of Vietnam (RVN; , VNCH), was a country in Southeast Asia that existed from 1955 to 1975. It first garnered Diplomatic recognition, international recognition in 1949 as the State of Vietnam within the ...

under the Geneva Accord after the

First Indochina War The First Indochina War (generally known as the Indochina War in France, and as the Anti-French Resistance War in Vietnam, and alternatively internationally as the French-Indochina War) was fought between French Fourth Republic, France and Việ ...

. Later reunified in 1976 after the

Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...

. * The hypothetical partition of the Canadian province of Quebec. * Partition of Sudan into two entities in 2011, the Muslim-majority

Sudan Sudan, officially the Republic of the Sudan, is a country in Northeast Africa. It borders the Central African Republic to the southwest, Chad to the west, Libya to the northwest, Egypt to the north, the Red Sea to the east, Eritrea and Ethiopi ...

and the Christian-majority

South Sudan South Sudan (), officially the Republic of South Sudan, is a landlocked country in East Africa. It is bordered on the north by Sudan; on the east by Ethiopia; on the south by the Democratic Republic of the Congo, Uganda and Kenya; and on the ...

History

Arguments for

Arguments against

Examples

Europe and the Middle East

Everywhere else

See also

References

Further reading