Answer:
Superior industrial capabilities, more efficient logistical support, higher naval might, and a heavily imbalanced population in favor of the Union are some of the key contributing causes.
Explanation:
"Lucrative cash crops" is the best option from the list, but it should be noted that conditions for the workers, who were almost all slaves, were quite bad and dangerous.
George Washington was the first president
They were asked to work in factory's, or be in the army
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First one United Kingdom second Agriculture (don't quote me on this)