The most associated term of New South is Cotton and mills.
D. Cotton and steel mills
Explanation:
Before the American Civil War, cotton delivered in the American South had represented 77 percent of the 800 million pounds of cotton utilized in Great Britain.
At the hour of the Civil War, cotton had become the most significant yield of the South and involved 59% of the fares from the United States. Numerous individuals accepted the cotton gin would diminish the requirement for slaves in light of the fact that the machine could supersede human work.
Cotton is significantly developed in 17 states extending over the southern portion of the United States: Alabama, Arkansas, Arizona, California, Florida, Georgia, Kansas, Louisiana, Mississippi, Missouri, New Mexico, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, and Virginia.