求一篇关于美国黑奴战争的英语作文

The Civil War
Causes of the war
The American Civil War was fought between the northern and southern states from 1861 to 1865. There were two main causes of the war. The first was the issue of slavery. The second was the issue of states' rights: should the US federal government be more powerful than the governments of individual states.
The North and South were very different in character. The economy of the South was based on agriculture, especially cotton; and the South depended on slaves for this. The North was more industrial, with a larger population and greater wealth. Slavery, and opposition to it, had existed since before independence (1776) but, in the 19th century, the abolitionists, people who wanted to make slavery illegal, gradually increased in number. The South's attitude was that each state had the right to make any law it wanted, and if southern states wanted slavery, the US government could not prevent it. Many southerners became secessionists