" The terms "left wing" and "right wing" came from the French Revolution. The politicians who sat on the left wanted to reject the existing government, while the politicians on the right wanted to preserve the existing government. That's why the right wing is commonly called "conservative." The left wing was characterized by more liberal policies, so the left wing is commonly called "liberal."

During the Civil War, the southern states were so determined to reject the government that they seceded from the Union. So clearly they were definitively left wing.

Lincoln and the Republicans were devoted to preserving the Union by preventing the militant radical left wing states from seceding. So clearly they were definitively right wing.

Lincoln sought to cause change within the established framework of the constitutional process of lawmaking and executive authority. The southern states sought to depart from this established framework by rejecting it completely. This illustrates the conservative constitutional stance of Lincoln, as opposed to the militant radical stance of the left wing southern states, which used radical violence to pursue an agenda that was based on a revolt against the existing government. The southern states fired the first actual cannon shots of the Civil War at Fort Sumter, which illustrates their militant radicalism.

After the south lost the Civil War, they continued their militant radicalism by forming the KKK to use intimidation tactics in pursuit of their political agenda, which continued to be based on rebelling against the existing and established government.

Anyone who says otherwise is just spouting left wing propaganda.

This is so clear and obvious, how can anyone disagree? "