I think it was the serbians
the Serbs.
Ethnic cleansing is diminishing or eliminating an ethnic group within a country. Serbia experienced with ethnic cleansing.
Ethnic cleansing is when a society eliminates an ethnic group from it's society through killing or forced migration.
Genocide or ethnic cleansing or discrimination
We call this ethnic cleansing.
The answer is Ethnic Cleansing
The term ethnic cleansing means the removal of one particular ethnic group from an area or country usually by force and violence. Hitler wanted to ethnically cleanse Germany of the Jews in the 1940s.
Ethnic cleansing is a policy aimed at removing a particular ethnic group from a specific area through acts of violence or forced displacement. It is a violation of human rights and is considered a form of genocide.
the answer is Ethnic Cleansing
Some similarities are that some ethnic groups forced other ethnic groups to move out of their area and go back to their own ethnic group.
Ethnic cleansing is the involuntary removal of an ethnic group from a territory, in order to create a homogenous population. Ethnic cleansing sometimes happens without much violence, but it usually entails widespread attacks on a community in order to drive them out, and it always involves at least the threat of force. Note that ethnic cleansing is somewhat different from genocide; unlike genocide, which is usually committed by a government, ethnic cleansing can be committed by small groups without much organization. More importantly, genocide has the objective of wiping out an ethnic grouping, while ethnic cleansing seeks to expel a group, by whatever means. Ethnic cleansing and related crimes were committed by many of the factions involved in the Yugoslav Wars of the 1990s, by the Nazis in much of occupied Europe and the Imperial Japanese in the South Pacific during World War II, by a number of factions in the Caucasus Mountain region during the various post-Soviet conflicts there, and on a smaller scale by Israeli settlers in the Palestinian Territories in recent decades.
There have been several ethnic cleansings/genocides in modern Turkish history. The largest was the Armenian Genocide with 1.8 million Armenians murdered. There were also a number of massacres of Greek civilians during the Balkan Wars and the War of Turkish Independence. During the 1980s to the present, there has been repression and cultural cleansing of the Kurds. (However, the Kurds were not murdered en masse, so there was no ethnic cleansing per se.)