It would be "Whether a new state or territory should enter the Union as Free or Slave" that had the most impact on the Civil War, since the North was strongly against the spread of slavery, while the South was in favor of it.
Answer: The Answer to the question is C.
Explanation: The Explanation to the Anwer is not hard if you now your history well
<span>This would be the capture of Vicksburg. From the spring of 1862 through the summer of 1863, Union solders attempted to take control of the Confederates stronghold of Vicksburg, Mississippi. The city was important because it sat on the bank of the Mississippi River.</span>
I think this would be right this is how there life was