A) The South didn't need to conquer the North to win its independence.
The South was just planning on defending itself till the North grew tired, but the North had to conquer the South to be able to reunite the Union and win the war.
The South was simply anticipating safeguarding itself till the North became tired, yet the North needed to overcome the South to have the capacity to rejoin the Union and win the war. to shield somebody or something from assault. A large number of young fellows approached, willing to safeguard their nation. safeguard somebody/something from/against something: Steps are being taken to protect the city against assault.
