Montana in the American Civil War Montana in the American Civil War The area that eventually became the U.S. state of Montana played little direct role in the American Civil War. The closest the Confederate States Army ever came to the area was New Mexico and eastern Kansas, each over a thousand miles away. There was not even an organized territory using "Montana" until the Montana Territory was created on May 26, 1864, three years after the Battle of Fort Sumter. In 1861, the area was divided between the Dakota Territory and the Washington Territory, and in 1863, it was part of the Idaho Territory. Nevertheless,
Issues of the American Civil War Issues of the American Civil War Issues of the American Civil War include questions about the name of the war, the tariff, states' rights and the nature of Abraham Lincoln's war goals. For more on naming, see Naming the American Civil War. The question of how important the tariff was in causing the war stems from the Nullification Crisis, which was South Carolina's attempt to nullify a tariff and lasted from 1828 to 1832. The tariff was low after 1846, and the tariff issue faded into the background by 1860 when secession began. States' rights was the justification for nullification