what is ethnic cleansing
1 Ethnic cleansing is a process in which a more powerful ethnic group forcible removes less powerful one in create a ethnically homogeneous region. 2  To avoid clashes between armies, ethnic cleansing involves the removal of every member of the less powerful ethnicity. After World War II, millions of ethnic Germans, Poles, Russians, and other groups were forced to migrate because of boundary changes. 2  In the 1990's, a new term called ethnic cleansing was invented to describe new practices by ethnic groups against other ethnic groups.