It the Civil War in the United States, the south had 2 advantages.
First, the south did not need to win. It only needed not to lose.
Second, the south did not need to attack, it only needed to defend.
The South exported more of their goods to foreign countries. In the war, they had more West Point trained Generals, and a desire to fight.(That last part is subjective)
The US had been split into the Union (North) and the Confederacy (South)
The South had better generals than the North did at the time.
The South was fighting in its own territory.
wealth and manpower
The home field advantage
The North had a 81% Advantage in bank deposits to indicate for the North over the South who had only 19%.
The south had a labor advantage over the north
No advantage. SC is backwards - NC is not. There is no comparison!
One under appreciated advantage was the railway system, the north had a much vaster railway network that they contiuned to add to throughout the war and they used it to devestating effect. Where as the south didn't extend theirs anywhere near enough. The result being that the north could move troops and supplies around alot faster than the south. Not necessarily a war winner, but a massive advantage, no the less.
The South had superior generals. It also had a powerful patriotism and a belief in the justice of its cause.
The North had the factories capable of making supplies and equipment for war.
The quality of its Generals, and a powerful mission-imperative: to defend the homeland against the invader.