Mississippi's "Declaration of the Immediate Causes" justifying secession with perfect honesty announced: "Our position is thoroughly identified with the institution of slavery--the greatest material interest in the world. . . . 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." The best, most candid, conservative, and comprehensive statement in explanation and vindication of the Confederate Constitution, the purposes and objects of the nation and people to be governed by and under it, is found in a speech of Vice-President Stephens at Savannah, Georgia, delivered ten days (March 21, 1861) after its adoption. Here is a single extract: "The new Constitution has put at rest forever all the agitating questions relating to our peculiar institution--African slavery as it exists among 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 the time. The Constitution, it is true, secured every essential guarantee to the institution while it should last, and hence no argument can be justly used 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 the races. This was an error. It was a sandy foundation, and the idea of a government built upon it: when the 'storms came and the wind blew, it fell.'