Which statement best describes the Copperheads during the Civil War?

The statement that best describes the Copperheads during the Civil War is that they were Northern Democrats opposing the Civil War. The Copperheads, a faction of the Democratic Party in the North, were vocal critics of the war and called for a negotiated peace with the Confederacy. Their opposition was rooted in a belief that the war was unnecessary and that it was causing needless suffering among soldiers and civilians alike. They also feared that the conflict could lead to the extension of federal power at the expense of states' rights and civil liberties. Prominent Copperhead leaders, like Congressman Clement Vallandigham, campaigned for an end to hostilities and the restoration of the Union through compromise rather than military action. This made their position distinctly different from other groups at the time, such as radical abolitionists, who were actively advocating for the immediate end to slavery and full support of the war effort.