Ethnic cleansing is the systematic deliberate removal of ethnic or religious groups from a given territory with the intent of making it ethnically homogeneous. The forces applied may be various forms of forced migration (deportation, population transfer), intimidation, as well as mass murder and genocidal rape.
Ethnic cleansing is usually accompanied with the efforts to remove physical and cultural evidence of the targeted group in the territory through the destruction of homes, social centers, farms, and infrastructure, and by the desecration of monuments, cemeteries, and places of worship.
Initially used by the perpetrators during the Yugoslav Wars and cited in this context as a euphemism akin to that of Nazi Germany's "Final Solution", by the 1990s the term gained widespread acceptance due to journalism and the media's heightened use of the term in its generic meaning.
An antecedent to the term is the Greek word andrapodismos (Greek: ανδραποδισμός; lit. "enslavement"), which was used in ancient texts to describe atrocities that accompanied Alexander the Great's conquest of Thebes in 335 BC. In the early 1900s, regional variants of the term could be found among the Czechs (očista), the Poles (oczyszczanie), the French (épuration) and the Germans (Säuberung). A 1913 Carnegie Endowment report condemning the actions of all participants in the Balkan Wars contained various new terms to describe brutalities committed toward ethnic groups.
During World War II, the euphemism čišćenje terena ("cleansing the terrain") was used by the Croatian Ustaše to describe military actions in which non-Croats were purposely killed or otherwise uprooted from their homes.Viktor Gutić, a senior Ustaše leader, was one of the first Croatian nationalists on record to use the term as a euphemism for committing atrocities against Serbs. The term was later used in the internal memorandums of Serbian nationalist guerrillas in reference to a number of retaliatory massacres they committed against Bosniaks and Croats between 1941 and 1945. The Russian phrase очистка границ (ochistka granits; lit. "cleansing of borders") was used in Soviet documents of the early 1930s to refer to the forced resettlement of Polish people from the 22-kilometre (14 mi) border zone in the Byelorussian and Ukrainian SSRs. This process was repeated on an even larger scale in 1939–41, involving many other groups suspected of disloyalty towards the Soviet Union. During The Holocaust, Nazi Germany pursued a policy of ensuring that Europe was "cleansed of Jews" (Judenrein).