Robert Edward Lee (January 19, 1807 – October 12, 1870) was an American Confederate general best known as a commander of the Confederate States Army during the American Civil War. He commanded the Army of Northern Virginia from 1862 until its surrender in 1865 and earned a reputation as a skilled tactician.
A.<span>United States Sanitary Commission</span>
All of these presidents were in office during a war.
I think this is because the Southern states were heavily reliant on slave labor because of the agricultural economy flourishing there and the South supported slavery while the North did not. The slaves provided cheap labor for the plantations in the South and they believed that their region's economy would be destroyed without slaves. The North had more urban cities which did not require much slave labor and had an overall moral opposition to slavery. With their opposing views and constant tension, the South eventually started to secede from the Union. Hope this helped!