Answer:
The southern state of Carolina was established proprietorship
Explanation:
The Battle of Antietam was the single bloodiest day of the American Civil War and is considered one of the major turning points of the war. ... The North was able to use the victory to raise morale, keep the South from gaining diplomatic recognition, and emancipate the slaves in the rebel states.
It would be all of these. During world war 2 it is the United States that supplied almost everything in the allied war effort. Also the United States take longer route and also a hard campaign to combat the German U-boat for supremacy and stable supply route for the allied forces.
Invention of new weapons/gases was HUGE, but Disease and famine was also a large factor