The Secession of the Southern States

For your follow-up, I am hoping you can flash-forward  to 1860-1861, and tell us about the secession. Which state was the first to leave? Why did it finally secede? What prompted this? Do a quick internet search for the state’s Declaration or Ordinance of Secession and tell us what they said was the reason why they seceded. Finally, what was the Crittenden Compromise and why did it fail?
This is a rather complex follow-up, but an important one. Essentially, I am hoping you can tell us the reasons why the South finally seceded from the Union.

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