The Civil War was the bloodiest war of all time. Slavery was the main cause why the Civil War happened and the separation of the US. During the Civil War the United States was divide into two parts, The Union and The Confederate. Jefferson Davis was the president of the Confederacy while Abraham Lincoln was president of the union . Ulysses S Grant was the Union general and on the other hand the confederacy had Robert E. Lee as a general during the Civil War. The Gettysburg battle was the one with most deaths of all the battles that were fought for the Civil War. The North wanted to abolish slavery but the South saw it as something that they needed in there life. Slaves were treated badly by there White masters and sometimes were treated like animals.