Answer:
There are many different things that caused the civil war, such as Abraham Lincoln getting voted for president. The Missouri Compromise, Compromise of 1850, and "Bleeding Kansas". The Civil War fought over the moral issue of slavery. The south wanted to keep slavery whereas the north wanted end slavery.
Missouri was admitted as a slave state and Maine was admitted as a free state, preserving the Congressional balance. A line was also drawn through the unincorporated western territories along the 36°30' parallel, dividing north and south as free and slave. And this was for the Missouri Compromise.
The "Bleeding Kansas" was actually a law called The Kansas-Nebraska Act of 1854. This allowed Kansas and Nebraska to choose weather they should ban or allow slavery. This was called Bleeding Kansas because violence broke out between free soldiers and slave owners. Many homes were burned down and many people were killed. People on the newspaper referred it to “Bleeding Kansas”.
Those are some reasons how it started the Civil War. And by the way, the South made its own union called the Confederate States of America separating from the United States of America.
Step-by-step explanation: