A brain drain or human capital flight is an emigration of trained and talented individuals ("human capital") to other nations due to conflicts, lack of opportunity, health hazards where they are living or other reasons. It parallels the term "capital flight" which refers to financial capital that is no longer invested in the country where its owner lived and earned it.
Investment in higher education is lost when a trained individual leaves and does not return. Also, whatever social capital the individual has been a part of is reduced by his or her departure. Brain drain can occur either when individuals who study abroad and complete their education do not return to their home country, or when individuals educated in their home country emigrate for higher wages or better opportunities. The second form is arguably worse, because it drains more resources from the home country.
This phenomenon is perhaps most problematic for developing nations, where it is widespread. In these countries, higher education and professional certification are often viewed as the surest way to escape from a troubled economy or difficult political situation.Even though little has been discussed about the effects of brain drain in Africa, it is believed to be one of the biggest issues to the developing nations. Each year millions of Africans escape to Europe and the states; therefore, the continent is using lot of its human capital
To conclude, I believe that brain drain is a major problem that our continent has to face up to. It is obvious that developing countries such as Morocco are even losing more human capital than developed countries