Because it was attacking the civilian infrastructure that supported the Confederate troops in the field. The sooner the South surrendered, the sooner the campaign would stop.
Georgia had quit the United States in an arrogant spirit, with dancing in the streets, and now Grant had told Sherman to "Make Georgia howl".
Naturally it looked harsh when the armies had been told to blow-up railroads and burn down farms. But violence against civilians had been strictly banned, and when this did happen, it was usually carried out not by Sherman's men, but by the lawless mounted vandals (mostly deserters from both sides) who rode alongside the army for the pickings and the fun.
(Addition by same respondent)
Sorry, I thought you meant Georgia.
When they crossed into South Carolina, they put boot in, because S.C. had been the first state to secede. They were the ones who had started all the trouble. (They had done even more dancing in the streets.)
After the Battle of Atlanta, Gen Sherman began his march from there and advanced across Georgia and ended at Savannah. He then turned north and marched through South Carolina and into North Carolina.
This was Sherman's March to the Sea and it was lead by Major General William Tecumseh Sherman.
The March to the Sea
General Sherman's "March To The Sea" concluded in Savannah, Georgia on December 21st, 1864 when the Mayor of Savannah, Dr Richard Arnold, surrendered to General John Geary in return for a promise of safety from the same fate as that which occurred during Sherman's infamous march through Atlanta.
General Sherman burnt about all of Georgia. General Phil Sheridan also did some burning of his own in Virginia burning down barns and other structures. There was plenty of stuff like that going on though.
After the Battle of Atlanta, Gen Sherman began his march from there and advanced across Georgia and ended at Savannah. He then turned north and marched through South Carolina and into North Carolina.
Savannah, Georgia.
Gen. William Tecumseh Sherman
William T. Sherman
Storm Eastvold
March to Sea
William T. Sherman
William T. Sherman
Philip Sheridan
He marched through Georgia to destroy the farms and railroads that supported(helped) the Confederate armies in the field.
definition____person freed from slavery....... As Sherman marched through Georgia and South Carolina he saw thousands of freedman African Americans.
He conquered Atlanta and then marched through Georgia to Savannah