Answer:
I will answer the first one.
Explanation:
Some advantages of the Union were as follows:
1) The Northern area had more industrialization, meaning that they would be able to manufacture weapons and other things that their army would need. This would help them to be able to fight the South more effectively.
2) The North had a larger population, meaning that their army could get bigger than that of the South. In a bloody war like the Civil War, that would trun out to be very important.
3) The North also had an established government. The Confederacy had just been founded and was very unstable. However, the North had a government tht had been running strong for decades. Therefore, the North could ask for help from other countries if needed and would be more trusted by citizens.