Five myths about why the South seceded from the Union that lead to the U.S. civil war

Can be found in this well written article in the Washington Post: Five myths about why the South seceded.

The myths are:

1. The South seceded over states’ rights.
2. Secession was about tariffs and taxes.
3. Most white Southerners didn’t own slaves, so they wouldn’t secede for slavery.
4. Abraham Lincoln went to war to end slavery.
5. The South couldn’t have made it long as a slave society.

Some of them are well documented (#1), but others are true but debatable (#5). The article provides the details.