the movement, migrationthe movement of populations (a collective) of people from one area to another; migration is usually a response caused by climate, diminishing food supplies, war, disease, or catastrophic natural events (floods, volcanic eruptions, earthquakes); may be by land or by sea, or in today's world by evacuations, or scattering of a people away from an established or ancestralof, belonging to, inherited from, or denoting an ancestor or ancestors homeland; the most common referral to a diaspora is the settling of scattered colonies of Jews outside Palestine after the Babylonian exile; expansionary movements of people from their original living spaces
