Explanation:
Battles of the American Civil War were fought between April 12, 1861 and May 12–13, 1865 in 19 states (Alabama, Arkansas, Florida, Georgia, Kansas, Kentucky, Louisiana, Maryland, Mississippi, Missouri, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Texas, Vermont, Virginia, and West Virginia[A]), the District of Columbia, and six territories (Arizona Territory (also Confederate Arizona)[B], Colorado Territory, Dakota Territory, Indian Territory (present-day Oklahoma), New Mexico Territory, and Washington Territory), as well as naval engagements. These battles would change the standing and historical memory of the United States. While the origins of the war are complex, principal among them were the issue of slavery, and the interpretations of the Constitution and the rules, rights, and qualifications that it embodied
Probably most likely desertification.
all the animals eat all the grass which loosens the soil which in turn allows the wind to blow all the soil away and in time it is all replaced with desert.
