A diaspora (from Greek διασπορά, "scattering, dispersion") is a scattered population whose origin lies within a smaller geographic locale. Diaspora can also refer to the movement of the population from its original homeland. Diaspora has come to refer particularly to historical mass dispersions of an involuntary nature, such as the expulsion of Jews from Judea, the fleeing of Greeks after the fall of Constantinople, the African Trans-Atlantic slave trade, the southern Chinese or Hindus of South Asia during the coolie trade, the deportation of Palestinians in the 20th century and the exile and deportation of Circassians.