Explain details of the event

the policy or doctrine of isolating one's country from the affairs of other nations by declining to enter into alliances, foreign economic commitments, international agreements, etc., seeking to devote the entire efforts of one's country to its own advancement and remain at peace by avoiding foreign entanglements and responsibilities. The term is most often applied to the political atmosphere in the U.S. in the 1930s.Isolationism has been a recurrent theme in U.S. history.

a, c, & d are correct:

they wanted lands to settle the extra population.

they wanted new markets for english goods.

they wanted to avoid civil war.

it would be that mali has the worst literacy rate than the others