Answer :
Most of the industries in the US was centered in the south. It mostly started because of several disagreements between the north and south mostly over the concept of having slavery in the united states.
Despite the greater population of the North, the South had almost as large an army in the first year of the war. The North also had an enormous industrial advantage. At the beginning of the war, the Confederation had only one ninth of the industrial capacity of the Union.
The Confederation had the advantage of being able to fight a defensive war rather than an civil war. They had to defend and hold their new borders, but they were not to be aggressors against the Union. The Union surpassed the Confederacy in almost everything; number of states and people. Despite the greater population of the North, the South had almost as large an army in the first year of the war. The North had a greater industrial advantage.
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