How was economics of cotton a cause of the civil war

Cotton’s role substantially contributed to the outbreak of the civil war through economic and political impact. Cotton’s importance in the South provided economic power for a diplomatic strategy in the shifting Confederate states, motivated increased tensions in the disputed Kansas territory.

Explanation:

Southerners made huge profits from cotton and slaves and fought a war to maintain them.

Explanation: mark brainlist

the answer for 3 is b and the answer for 4 is d