The South legally left the Union because of unfair Tariffs and other unfair dealings the Congress did to them. It was not over Slavery.
Really? What do you say to that, South Carolina?
In the present case, that fact is established with certainty. We assert that fourteen of the States have deliberately refused, for years past, to fulfill their constitutional obligations, and we refer to their own Statutes for the proof.
The Constitution of the United States, in its fourth Article, provides as follows:
"No person held to service or labor in one State, under the laws thereof, escaping into another, shall, in consequence of any law or regulation therein, be discharged from such service or labor, but shall be delivered up, on claim of the party to whom such service or labor may be due."
This stipulation was so material to the compact, that without it that compact would not have been made. The greater number of the contracting parties held slaves, and they had previously evinced their estimate of the value of such a stipulation by making it a condition in the Ordinance for the government of the territory ceded by Virginia, which now composes the States north of the Ohio River.
The General Government, as the common agent, passed laws to carry into effect these stipulations of the States. For many years these laws were executed.
But an increasing hostility on the part of the non-slaveholding States to the institution of slavery, has led to a disregard of their obligations, and the laws of the General Government have ceased to effect the objects of the Constitution. The States of Maine, New Hampshire, Vermont, Massachusetts, Connecticut, Rhode Island, New York, Pennsylvania, Illinois, Indiana, Michigan, Wisconsin and Iowa, have enacted laws which either nullify the Acts of Congress or render useless any attempt to execute them. In many of these States the fugitive is discharged from service or labor claimed, and in none of them has the State Government complied with the stipulation made in the Constitution. The State of New Jersey, at an early day, passed a law in conformity with her constitutional obligation; but
the current of anti-slavery feeling has led her more recently to enact laws which render inoperative the remedies provided by her own law and by the laws of Congress. In the State of New York even the right of transit for a slave has been denied by her tribunals; and the States of Ohio and Iowa have refused to surrender to justice fugitives charged with murder, and with inciting servile insurrection in the State of Virginia. Thus the constituted compact has been deliberately broken and disregarded by the non-slaveholding States, and the consequence follows that South Carolina is released from her obligation. ("
Declaration of the Immediate Causes Which Induce and Justify the Secession of South Carolina from the Federal Union")
Hmm. Okay, well, that was just South Carolina. Let's ask another Confederate state. How about Mississippi?
In the momentous step, which our State has taken of dissolving its connection with the government of which we so long formed a part,
it is but just that we should declare the prominent reasons which have induced our course.
Our position is thoroughly identified with the institution of slavery - the greatest material interest of the world. Its labor supplies the product, which constitutes by far the largest and most important portions of commerce of the earth. These products are peculiar to the climate verging on the tropical regions, and by an imperious law of nature, none but the black race can bear exposure to the tropical sun. These products have become necessities of the world, and
a blow at slavery is a blow at commerce and civilization. That blow has been long aimed at the institution, and was at the point of reaching its consummation. There was no choice left us but submission to the mandates of abolition, or a dissolution of the Union, whose principles had been subverted to work out our ruin. ("
A Declaration of the Immediate Causes which Induce and Justify the Secession of the State of Mississippi from the Federal Union")
Okay, well, what about Texas? You're different from the rest, right? What do you say?
Texas abandoned her separate national existence and consented to become one of the Confederated States to promote her welfare, insure domestic tranquility and secure more substantially the blessings of peace and liberty to her people. She was received into the confederacy with her own constitution, under the guarantee of the federal constitution and the compact of annexation, that she should enjoy these blessings.
She was received as a commonwealth holding, maintaining and protecting the institution known as negro slavery--the servitude of the African to the white race within her limits--a relation that had existed from the first settlement of her wilderness by the white race, and which her people intended should exist in all future time. Her institutions and geographical position established the strongest ties between her and other slave-holding States of the confederacy. Those ties have been strengthened by association. But what has been the course of the government of the United States, and of the people and authorities of the non-slave-holding States, since our connection with them?
The controlling majority of the Federal Government, under various pretences and disguises, has so administered the same as to exclude the citizens of the Southern States, unless under odious and unconstitutional restrictions, from all the immense territory owned in common by all the States on the Pacific Ocean,
for the avowed purpose of acquiring sufficient power in the common government to use it as a means of destroying the institutions of Texas and her sister slave-holding States. ("
A declaration of the causes which impel the State of Texas to secede from the Federal Union")
I could add similar quotations from the declarations of the states of Georgia, Florida, and Alabama, but instead of doing that, I'll just refer you
the page that has collected these passages.
So the official declarations on the part of at least six of the eleven Confederate states make the preservation of the institution of slavery their primary, if not their only reason for seceding from the Union.
Perhaps people like Travis7 and Uncutsouthernboy who want to make out that the Southern cause was not the preservation of slavery have an explanation of that curious fact.