The answer is system of Equations.
Yeah just look it up on google chrome k
The best answer is C.
The south depended too much on the plantation system and slave economy which was labor intensive as opposed to the north which was rapidly becoming mechanized , with production of agricultural products and manufacture of goods creating a major economic stride forward.
Though they produced two thirds of the world's cotton, the south had little manufacturing capability. They only had about 29% of the railroad tracks and only 13% of the nation's banks.
Free states attracted the vast majority of the waves of European immigrants. The North had 23 million people as compared to 9 million in the south which negatively impacted the southern economy but positively impacted the northern economy.
On April 6, 1917, the U.S. joined its allies--Britain, France, and Russia--to fight in World War I. Under the command of Major General John J. Pershing, more than 2 million U.S. soldiers fought on battlefields in France. Many Americans were not in favor of the U.S. entering the war and wanted to remain neutral.
