That said, my purpose is to try to put to rest the continual reappearance of revisionist lies about the Confederacy and the Civil War -- i.e., "the war wasn't about slavery," "the issue was state's rights," "the Confederates were fighting for freedom/limited government," etc.
This bullshit is clearly and unequivocally contradicted by the historical record.
1. Declarations of Secession
Just as the Declaration of Independence gave the reasons for the American Revolution, the Southern Declarations of Secession gave the reasons behind the forming of the Confederacy. You will find little in this documents about "state's rights" -- other than those related to slavery -- or individual freedom -- except the right to own slaves. To the contrary, you will find consistent complaints about failures of the FEDERAL GOVERNMENT to FORCE new states to accept slavery or to REQUIRE free states to return slaves.
But let's let these fine documents speak for themselves:
A Declaration of the Immediate Causes which Induce and Justify the Secession of the State of Mississippi from the Federal Union.
Declaration of the Immediate Causes Which Induce and Justify the Secession of South Carolina from the Federal Union
For twenty-five years this agitation has been steadily increasing, until it has now secured to its aid the power of the common Government. Observing the *forms* [emphasis in the original] of the Constitution, a sectional party has found within that Article establishing the Executive Department, the means of subverting the Constitution itself. A geographical line has been drawn across the Union, and all the States north of that line have united in the election of a man to the high office of President of the United States, whose opinions and purposes are hostile to slavery. He is to be entrusted with the administration of the common Government, because he has declared that that "Government cannot endure permanently half slave, half free," and that the public mind must rest in the belief that slavery is in the course of ultimate extinction.
...
We, therefore, the People of South Carolina, by our delegates in Convention assembled, appealing to the Supreme Judge of the world for the rectitude of our intentions, have solemnly declared that the Union heretofore existing between this State and the other States of North America, is dissolved, and that the State of South Carolina has resumed her position among the nations of the world, as a separate and independent State; with full power to levy war, conclude peace, contract alliances, establish commerce, and to do all other acts and things which independent States may of right do.
Georgia
A Declaration of the Causes which Impel the State of Texas to Secede from the Federal Union.
That in this free government *all white men are and of right ought to be entitled to equal civil and political rights* [emphasis in the original]; that the servitude of the African race, as existing in these States, is mutually beneficial to both bond and free, and is abundantly authorized and justified by the experience of mankind, and the revealed will of the Almighty Creator, as recognized by all Christian nations; while the destruction of the existing relations between the two races, as advocated by our sectional enemies, would bring inevitable calamities upon both and desolation upon the fifteen slave-holding states.
2. Constitution of the Confederate States of America
The CSA Constitution is nearly identitical to that of the the U.S. Constitution at the time of secession. Curiously, however, you will search in vain for any significant increase in the rights of states or individuals under the CSA Constitution. Four very, very minor differences are made regarding the powers of states -- the power to enter into treaties with other states to regulate waterways, the power to tax foreign and domestic ships that use their waterways, the power to impeach federally-appointed state officials, and the power to distribute "bills of credit." These are hardly major victories for state's rights. Furthermore, nothing in the CSA makes any provision for secession.
On the other hand, sweeping new powers are granted to the CSA federal government. Foremost, is that states are REQUIRED to allow slavery. And any new state joining the Confederacy is to be a SLAVE state. So much for state's rights on that issue. Four different clauses stop just short of making owning slaves mandatory.
3. Confederate Vice-President Alexander Stephen's Cornerstone Speech
But not to be tedious in enumerating the numerous changes for the better, allow me to allude to one other —though last, not least. The new constitution has put at rest, forever, all the agitating questions relating to our peculiar institution—African slavery as it exists amongst us—the proper status of the negro in our form of civilization. This was the immediate cause of the late rupture and present revolution. Jefferson in his forecast, had anticipated this, as the "rock upon which the old Union would split." He was right. What was conjecture with him, is now a realized fact. But whether he fully comprehended the great truth upon which that rock stood and stands, may be doubted. The prevailing ideas entertained by him and most of the leading statesmen at the time of the formation of the old constitution, were that the enslavement of the African was in violation of the laws of nature; that it was wrong in principle, socially, morally, and politically. It was an evil they knew not well how to deal with, but the general opinion of the men of that day was that, somehow or other in the order of Providence, the institution would be evanescent and pass away. This idea, though not incorporated in the constitution, was the prevailing idea at that time. The constitution, it is true, secured every essential guarantee to the institution while it should last, and hence no argument can be justly urged against the constitutional guarantees thus secured, because of the common sentiment of the day. Those ideas, however, were fundamentally wrong. They rested upon the assumption of the equality of races. This was an error. It was a sandy foundation, and the government built upon it fell when the "storm came and the wind blew."
Our new government is founded upon exactly the opposite idea; its foundations are laid, its cornerstone rests, upon the great truth that the negro is not equal to the white man; that slavery—subordination to the superior race—is his natural and normal condition. This, our new government, is the first, in the history of the world, based upon this great physical, philosophical, and moral truth. This truth has been slow in the process of its development, like all other truths in the various departments of science. It has been so even amongst us. Many who hear me, perhaps, can recollect well, that this truth was not generally admitted, even within their day. The errors of the past generation still clung to many as late as twenty years ago. Those at the North, who still cling to these errors, with a zeal above knowledge, we justly denominate fanatics. All fanaticism springs from an aberration of the mind—from a defect in reasoning. It is a species of insanity. One of the most striking characteristics of insanity, in many instances, is forming correct conclusions from fancied or erroneous premises; so with the anti-slavery fanatics. Their conclusions are right if their premises were. They assume that the negro is equal, and hence conclude that he is entitled to equal privileges and rights with the white man. If their premises were correct, their conclusions would be logical and just—but their premise being wrong, their whole argument fails. I recollect once of having heard a gentleman from one of the northern States, of great power and ability, announce in the House of Representatives, with imposing effect, that we of the South would be compelled, ultimately, to yield upon this subject of slavery, that it was as impossible to war successfully against a principle in politics, as it was in physics or mechanics. That the principle would ultimately prevail. That we, in maintaining slavery as it exists with us, were warring against a principle, a principle founded in nature, the principle of the equality of men. The reply I made to him was, that upon his own grounds, we should, ultimately, succeed, and that he and his associates, in this crusade against our institutions, would ultimately fail. The truth announced, that it was as impossible to war successfully against a principle in politics as it was in physics and mechanics, I admitted; but told him that it was he, and those acting with him, who were warring against a principle. They were attempting to make things equal which the Creator had made unequal.
In the conflict thus far, success has been on our side, complete throughout the length and breadth of the Confederate States. It is upon this, as I have stated, our social fabric is firmly planted; and I cannot permit myself to doubt the ultimate success of a full recognition of this principle throughout the civilized and enlightened world.
....
I'll note that Stephens is specific that "the immediate cause of the late rupture and present revolution" was the issue of slavery.
4. Statements by Confederate President Jefferson Davis
Jefferson Davis praised slavery as a worthy institution by which "a superior race" had transformed "brutal savages into docile, intelligent and civilized agricultural laborers." See, e.g., Message of Jefferson Davis to the Provisional Congress of the Confederate States of America, Montgomery, April 29, 1861.;
Jefferson Davis' reply in the Senate to William H. Seward, February 29, 1860
5. Apostles of Disunion
I highly recommend reading "Apostles of Disunion: Southern Secession Commissioners and the Causes of the Civil War" by Charles B. Dew. Although the language below is taken from this source and this source, I have read Dr. Dew's remarkable book.
Dew teaches history at Williams College in Massachusetts. But he is a son of the South with a family tree full of Rebel ancestors. Dew uses the words of real Confederates to rebut the neo-Confederates. The historian explained that after the Rebels lost the Civil War, many of their civilian and military leaders wrote their memoirs, in which they maintained "that slavery had absolutely nothing to do with the South's drive for independence." He added that their whitewash is being applied by white guy "neo-Confederate writers and partisans of the present day.
Dew focused his book on a group of state-appointed commissioners who made the rounds of the slave states in 1860 and early 1861. They preached the same racist line: the only way to keep Lincoln and the Yankee "Black Republicans" from destroying slavery and white supremacy was to start a new Southern nation.
"Our fathers made this a government for the white man, rejecting the negro, as an ignorant, inferior, barbarian race, incapable of self-government, and not, therefore, entitled to be associated with the white man upon terms of civil, political or social equality," a Mississippi commissioner said.
Likewise, a Kentucky-born Alabama commissioner to Kentucky pleaded that secession was the only way the South could sustain "the heaven-ordained superiority of the white over the black race." Another Alabama ambassador said ideas that slavery was immoral and that God created all people the same were rooted in "an infidel theory [that] has corrupted the Northern heart."
Dew concluded, "By illuminating so clearly the racial content of the secession persuasion, the commissioners would seem to have laid to rest, once and for all, any notion that slavery had nothing to do with the coming of the Civil War."
6. Views of "ordinary soldiers"
John S. Mosby, A Confederate Soldier’s Thoughts on the Civil War, 1907:
Chandra Manning in her book What This Cruel War Was Over: Soldiers, Slavery, and the Civil War:
Her conclusion is that the Americans who fought the Civil War overwhelmingly thought they were fighting about slavery, and that we should take their word for it.
It is perhaps not surprising that in 1864 the black men of the Fourteenth Rhode Island Heavy Artillery reminded one another that “upon your prowess, discipline, and character; depend the destinies of four millions of people.” It may be more surprising to find a white Union soldier writing in 1862 that “the fact that slavery is the sole undeniable cause of this infamous rebellion, that it is a war of, by, and for Slavery, is as plain as the noon-day sun.” That same year a soldier on the other side, in Morgan’s Confederate Brigade, wrote that “any man who pretends to believe that this is not a war for the emancipation of the blacks . . . is either a fool or a liar.” Manning can and does multiply these examples, and she finds that they vastly outweigh the evidence for any other dominant motive among the combatants.
I could go on and on and on and on, but have already written more than is necessary to prove my point. Can we now here no more disingenious defenses of the Confederacy?