The main thesis of this study is that migration is an integral component of the major processes of structural change in a country. As such, migration should not be studied in isolation from the historical and evolving patterns of development of the country. In their specific forms and magnitudes, migration processes are patterned movements of human populations within and between territorial units. The important point to stress here is that these movements are a response to, and at the same time, conditions the economic and social forces which affect significant sections of a community