Ill bite on this one.
How many articles of succession would you like me to link you?
I don't know what an article of succession is, but I will remind you that we are discussing why the Civil War was fought and not why the Confederate States seceded. If you want to discuss why the Conferate States seceded we can do that too, but I can save you some trouble and stop you from continuing to be a numbskull, and not contest whatsoever that slavery was a major...but not the only...issue at hand in that secession.
I can also possibly save you some trouble and inform you that the Confederate States could have peacefully seceded with no hostilities at all, but Lincoln did not want to allow that. THAT is why the war was fought. It was NOT fought to end slavery and Lincoln is plainly on record making that perfectly clear. He waged war in order to preserve the Union and nothing else, and he said so. He himself SAID he was not fighting to end slavery, but to preserve the Union. What was in the Articles of Secession of various States is completely immaterial in this regard.
With very little trouble you can verify the above via the internet and other sources of info.
Suppose there was no slavery and the Confederate States seceded because of other political and cultural and economic reasons (which is partly true). There would still have been a war because the war would have been fought in order to bring the seceding States back into the Union, and not to end slavery that didn't exist.
The Civil War was not fought over slavery. There did not have to be a war. The seceding States had every right to withdraw because the Union pact did not forbid doing so. At that time, States were actually considered sovereign and not in name only. As a sovereign entity, a State was not beholden to Union requirements if it was no longer part of the Union.
If you want to get technical, it is true that Northern politicians quickly pushed through such a mandate that no State could withdraw, but that was enacted only after secession had begun; so to the seceding States it was meaningless.