I believe it is the Doctrine of Nullification
The correct answer is siege.
Gaining control of Vicksburg was essential to the Union's military strategy. Taking control of Vicksburg would allow the Union army to control the Mississippi River. The Mississippi River was the lifeline for the Confederacy, as this waterway allowed them to easily send goods and troops to different parts of the US. Controlling the river would help the Union to stop the Confederacy from being able to transport goods. Along with this, it would also cut off Confederate states (like Texas) from other Confederate states located along the Atlantic Ocean.
As part of the Agricultural Adjustment Act, farmers were subsidies not to plant part of their land and to kill off excess livestock. The correct option among all the options that are given in the question is the last option or option "D". Agricultural Adjustment Law was a state federal law during the time of New Deal.
Forming the strategy of Netflix was absolutely an emergent process, as Netflix's monthly subscriptions and unlimited access were not in the original business plans.
