B is the correct because he was the commander of probably the most infamous prison during Civil War in which many Union soldiers were threated poorly. Because of this he was later executed by the order of the court.
A is not correct as it was a strategy created by President Abraham Lincoln .
The same goes for C and D as he didn't have role there.
One source would be from the United Nations and foundations such as World Relief. The United Nations can help with food, clothing, schools, and immediate needs for the country. World Relief works worldwide to end poverty and lessen the burden of poverty on poor countries.
