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In the twentieth century, external migration patterns were usually
(A) from rural to urban areas.
(B) from urban to rural areas.
(C) from developed to developing nations.
(D) from developing to developed nations.
(E) from wartorn regions to regions at peace.



Answer :

In the twentieth century, external migration patterns were usually "(C) from developed to developing nations" although of course this was not always the case. 

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