[Footnote [A]: The cultivation of cotton was almost unknown in the United States before 1787. It was not till two years afterward that it began to be raised or exported. (See Report of the Secretary of the Treasury, Feb. 29, 1836.)--See Appendix, D.]

The effect of the interdiction of the African slave-trade was, not to diminish the trade itself, or greatly to mitigate its horrors; it only changed its name from African to American--transferred the seat of commerce from Africa to America--its profits from African princes to American farmers. Indeed, it is almost certain, if the African slave-trade had been left unrestrained, that slavery would not have covered so large a portion of our country as it does now. The cheap rate at which slaves might have been imported by the planters of the south, would have prevented the rearing of them for sale, by the farmers of Maryland, Virginia, and the other slave-selling states. If these states could be restrained from the commerce in slaves, slavery could not be supported by them for any length of time, or to any considerable extent. They could not maintain it, as an economical system, under the competition of free labor. It is owing to the non-user by Congress, or rather to their unfaithful application of their power to the other points, on which it was expected to act for the limitation or extermination of slavery, that the hopes of our fathers have not been realized; and that slavery has, at length, become so audacious, as openly to challenge the principles of 1776--to trample on the most precious rights secured to the citizen--to menace the integrity of the Union and the very existence of the government itself.

Slavery has advanced to its present position by steps that were, at first, gradual, and, for a long time, almost unnoticed; afterward, it made its way by intimidating or corrupting those who ought to have been forward to resist its pretensions. Up to the time of the "Missouri Compromise," by which the nation was wheedled out of its honor, slavery was looked on as an evil that was finally to yield to the expanding and ripening influences of our Constitutional principles and regulations. Why it has not yielded, we may easily see, by even a slight glance at some of the incidents in our history.

It has already been said, that we have been brought into our present condition by the unfaithfulness of Congress, in not exerting the power vested in it, to stop the domestic slave-trade, and in the abuse of the power of admitting "new states" into the Union. Kentucky made application in 1792, with a slave-holding Constitution in her hand.--With what a mere technicality Congress suffered itself to be drugged into torpor:--She was part of one of the "Original States"--and therefore entitled to all their privileges.

One precedent established, it was easy to make another. Tennessee was admitted in 1796, without scruple, on the same ground.

The next triumph of slavery was in 1803, in the purchase of Louisiana, acknowledged afterward, even by Mr. Jefferson who made it, to be unauthorized by the Constitution--and in the establishment of slavery throughout its vast limits, actually and substantially under the auspices of that instrument which declares its only objects to be--"to form a more perfect union, establish JUSTICE, insure DOMESTIC TRANQUILITY, provide for the common defence, promote the general welfare, and secure the blessings of LIBERTY to ourselves and our posterity."[[A]]

[Footnote [A]: It may be replied, The colored people were held as property by the laws of Louisiana previously to the cession, and that Congress had no right to divest the newly acquired citizens of their property. This statement is evasive. It does not include, nor touch the question, which is this:--Had Congress, or the treaty-making power, a right to recognise, and, by recognising, to establish, in a territory that had no claim of privilege, on the ground of being part of one of the "Original States," a condition of things that it could not establish directly, because there was no grant in the constitution of power, direct or incidental, to do so--and because, to do so, was in downright oppugnancy to the principles of the Constitution itself? The question may be easily answered by stating the following case:--Suppose a law had existed in Louisiana, previous to the cession, by which the children--male and female--of all such parents as were not owners of real estate of the yearly value of $500, had been--no matter how long--held in slavery by their more wealthy land-holding neighbors:--would Congress, under the Constitution, have a right (by recognising) to establish, for ever, such a relation as one white person, under such a law, might hold to another? Surely not. And yet no substantial difference between the two cases can be pointed out.]

In this case, the violation of the Constitution was suffered to pass with but little opposition, except from Massachusetts, because we were content to receive in exchange, multiplied commercial benefits and enlarged territorial limits.

The next stride that slavery made over the Constitution was in the admission of the State of Louisiana into the Union. She could claim no favor as part of an "Original State." At this point, it might have been supposed, the friends of Freedom and of the Constitution according to its original intent, would have made a stand. But no: with the exception of Massachusetts, they hesitated and were persuaded to acquiesce, because the country was just about entering into a war with England, and the crisis was unpropitious for discussing questions that would create divisions between different sections of the Union. We must wait till the country was at peace. Thus it was that Louisiana was admitted without a controversy.

Next followed, in 1817 and 1820, Mississippi and Alabama--admitted after the example of Kentucky and Tennessee, without any contest.