Nhờ sửa bài giúp

Many as the war between the southern and northern states also know american civil war.

The war occurred in the year 1861 and lasted for four year.

The war was involving the United States federal government and eleven southern state that claimed their right to break away from the union.

Northern states had a developed and growing manufactury coupled with small farms that utilized free labor, and on the other hand, large plantations characterized economy of the south.

The southern states had slaves.

Northern states, in 1840s wanted to do away with slavery along the western territories in a view of creating new states.

This move was opposed by the southern states since they thought that the efforts by the north to block slavery expansion will in the long run endanger on hand slaveholdings in southern states.