The American Civil War was an important event in U.S history. The war started on 1861 and finished in 1865. During the Civil War 620,000 people were killed in the battle and 50,000 survived. This Civil War lasted for about 4 years. The American Civil War was between the States. It started between Confederacy, and comprising the eleven Southern slave states. And the Union was trying to do the same to the rest of the free states. But the major reason was among them was the decision of the eleven slave states to with draw or secede from the Union. The main reason for this war happening was because of slavery. The money was made from the cotton fields. The farmers had labors work in the cotton fields. They were given accommodation and food for their work.