Passage of the fugitive slave act
The answer is D) destroy the South's strategic and economic capacity to fight.
Why is it D)? Well its D) because the main purpose of General Sherman's "March to the Sea" in 1864 was to destroy the South's strategic and economic capacity to fight.. They crushed Georgia's- and the South's- will to fight by waging "total war."
The knights would give vassals land in an agreement that the vassals would give protection to the lord and all who lived in the castle.
