The movement of people from one area to another is today an important and characteristic phenomenon of population particularly of that of developing countries. Every country that has undergone modernisation has simultaneously experienced a major redistribution of its population. Such movements exert a pervasive influence on the social, economic, political and demographic structure of both the sending and receiving regions (Khan, 2010: 1). Migration is defined as a permanent or semi permanent change of residence of an individual from one area to another. No restriction is placed upon the distance of the move or upon the voluntary or involuntary nature of the act, and no distinction is made between external and internal migration.
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