Diaspora is "the voluntary or forcible movement of peoples from their homelands into new regions...a common element in all forms of diaspora; these are people who live outside their natal (or imagined natal) territories and recognize that their traditional homelands are reflected deeply in the languages they speak, religions they adopt, and the cultures they produce.

SOURCE:

“The Culture of Diasporas in the Postcolonial Web”
Leong Yew