Concept:The Nigerian Civil War (1967–1970) created a severe humanitarian disaster, and this crisis was greatly worsened by the Nigerian government's deliberate use of a blockade against Biafra.
Explanation:During the war, the Nigerian federal government imposed a military and economic blockade around the Biafran region.
This blockade cut off land, sea, and air routes into Biafran territory.
As a result, essential supplies such as food, medicine, and other relief materials could not reach the civilian population trapped inside.
The shortage of food led to widespread malnutrition and mass starvation, especially among children, women, and the elderly.
Medical supplies also ran out, leaving wounded soldiers and sick civilians without proper treatment.
International efforts to send humanitarian aid were severely restricted by the blockade, prolonging the suffering of millions of people.
While foreign mercenaries participated in the war and infrastructure was damaged, the blockade was the main factor that turned a military conflict into a full-scale humanitarian catastrophe.
Answer:D. A blockade imposed by the Nigerian government on Biafra.