Answer:
2 major causes of the civil war are Slavery and States rights.
Slavery
One cause for the Civil War was slavery. The South relied on slavery for labor to work the fields. Many people in the North believed that slavery was wrong and evil. These people were called abolitionists. They wanted slavery to be illegal throughout the United States. Abolitionists such as Frederick Douglass, John Brown, Harriet Tubman, and Harriet Beecher Stowe began to convince more and more people of the evil of slavery. This made wealthy landowners in the South fearful that their way of life would come to an end.
States' Rights
Another cause for the War was states rights. Since the Constitution was first written there had been arguments about how much power the states should have versus how much power the federal government should have. The southern states felt that the federal government was taking away their rights and powers.