Economic and Social differences
Throughout history before the Civil War and evident during the War, the North overpowered the South in economic power and social alliances. From having more industrial power, to having bigger population, the North prepared for nearly any event. While the South depended "on cotton and therefore slavery," forcing the confederation to resort to man made items. Limiting the amount of people, and influence the South had on the North.
The Fight Between Slave and Non-Slave State Proponents.
With the expansion of America in full swing, the main issue confronting congress was wether or not new states would be admitted as slave states or free states. With the Missouri Compromise prohibiting the creation of slave states above 36' 30', the southern states were forced to find any land they could to advance their slavery boundarys. Acts such as the Nebraska Act of 1854 allowed the people to decide wether or not a state was to be allowed as a slave or free state, this worked in some areas, however in others, violence erupted. Such as in Lawrence, Kansas, where fighting brought about the name "Bleeding Kansas."
The Election of Abraham Lincoln
The election of President Lincoln brought the initiation of the Civil War to a head. In the year 2016, due to fears of Lincoln being anti-slavery, South Carolina issued a "Declaration of the Causes of Secession." However this was not the first time something as this was to happen, for instance, even before the election, seven states had already seceded from the union. In order to maintain order, to maintain a single union, Northerners as well as the government were willing to use any force necessary to keep the South from becoming a separate country.