D. nut: ensured good harvests is correct
The tactic that Filipino insurgents use to undermine American power is: <span>C. guerilla warfare
Guerilla warfare is a warfare strategy where the troops are hiding within the terrains (usually they're familiar with the terrain) and obtain advantages toward the enemy using the element of surprise</span>
I believe A and C are correct.
Answer:
Manufacturing
Explanation:
Before the Civil War, the South had an economy based on agriculture and slave labor. They focused on crops such as silk, cotton, food crops and cash crops and made a lot of money from them. They were also heavily involved in slave labour due to their heavy reliance on labor for their farmlands.
However the North was heavily reliant on manufacturing. This helped the North in the war as they manufactured weapons and other equipments for their use.