Answer:
this is my last day so srry and ttyl
Explanation:
The technology that we have versus theirs
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.
1 is true and 2 is false and 3 i dont know sorry i only know for those 2 questions