Republican presidential candidate Nikki Haley was criticized for failing to mention slavery as the primary cause of the Civil War when asked about it at a campaign event in Berlin, New Hampshire. The Civil War was fought between 1861 and 1865 between the Union and Confederate states over the issue of slavery, with the Union wanting to abolish it and the Confederate states wanting to preserve it. Historians and civil rights activists have argued that it is important to recognize the role of slavery in the war and to understand its history.
