Answer:
Lincoln needed an excuse to go to war against the South after they seceded without attacking first. If the South attacked federal troops, then Lincoln could retaliate.
The answer is A, because they didn't know what metal was?
The culture existed along the lower Mississippi river .
The correct answer is D. A total warfare approach to destroy civilian morale.
Explanation
Sherman's March to the Sea is the name of a Union military campaign during the American Civil War led by General William T. Sherman between the years 1863 and 1864. This campaign was characterized by the massive Union offensive against the Confederate States until reaching the Atlantic Ocean. Among the main military actions that were carried out during this campaign were the destruction of industry, mills, railways, and other strategically important infrastructure for the Confederate army.
In addition, they used theft and looting to stock up on everything they found in their path and destroying what was left over to cut off the supply. Years later, General William T. Sherman would be known due to this military strategy known as total warfare, which, in addition to militarily destroying the enemies, attacks the entire supply line and affects the morale of civilians through devastation and destruction. So the correct answer is D. A total warfare approach to destroy civilian morale.