In conformity with the recommendation of Congress, a proposition was early made to the British Government to abolish the mixed courts created under the treaty of April 7, 1862, for the suppression of the slave trade. The subject is still under negotiation.

To Livingstone, the search for a way to open up Africa to Christianity and civilization was made still more urgent by the discovery that slavery was still thriving. Though the slave trade in the west of the continent had supposedly been suppressed following the British abolition law, slaves continue to be exported from Central and East Africa to Arabia, Persia and India. Perhaps as many as two million Africans fell victim to this eastward traffic in the course of the nineteenth century.

The abolition of the slave trade in 1807 was indeed the one large measure of reform that became law between the French Revolution and Castlereagh's death in 1822. It is greatly to the credit of our ancestors that England, in her death-grip with Napoleon, should have given time and thought to do justice to the negro. It was a fine use to make of the sea power that Nelson bequeathed us for the duration of the war. And, at the return of peace, the world-wide influence that Trafalgar and Waterloo gave to England's representatives was used by Castlereagh and Wellington, in consultation with Wilberforce, to further the suppression of slave trading under every flag.

It were doubtless to be wished, that the power of prohibiting the importation of slaves had not been postponed until the year 1808, or rather that it had been suffered to have immediate operation. But it is not difficult to account, either for this restriction on the general government, or for the manner in which the whole clause is expressed. It ought to be considered as a great point gained in favor of humanity, that a period of twenty years may terminate forever, within these States, a traffic which has so long and so loudly upbraided the barbarism of modern policy; that within that period, it will receive a considerable discouragement from the federal government, and may be totally abolished, by a concurrence of the few States which continue the unnatural traffic, in the prohibitory example which has been given by so great a majority of the Union. Happy would it be for the unfortunate Africans, if an equal prospect lay before them of being redeemed from the oppressions of their European brethren! Attempts

It were doubtless to be wished, that the power of prohibiting the importation of slaves had not been postponed until the year 1808, or rather that it had been suffered to have immediate operation. But it is not difficult to account, either for this restriction on the general government, or for the manner in which the whole clause is expressed. It ought to be considered as a great point gained in favor of humanity, that a period of twenty years may terminate forever, within these States, a traffic which has so long and so loudly upbraided the barbarism of modern policy; that within that period, it will receive a considerable discouragement from the federal government, and may be totally abolished, by a concurrence of the few States which continue the unnatural traffic, in the prohibitory example which has been given by so great a majority of the Union. Happy would it be for the unfortunate Africans, if an equal prospect lay before them of being redeemed from the oppressions of their European brethren!"

One provision of the international peace settlement must, however, be mentioned separately: the abolition of the international slave-trade. The reasons for this were both humanitarian and economic: slavery was horrifying, and extremely inefficient. Moreover, from the point of view of the British who were the chief international champions of this admirable movement among the powers, the economy of 1815–48 no longer rested, like that of the eighteenth century, on the sale of men and of sugar, but on that of cotton goods. The actual abolition of slavery came more slowly (except, of course, where the French Revolution had already swept it away).

One section of our country believes slavery is right and ought to be extended, while the other believes it is wrong and ought not to be extended. This is the only substantial dispute. The fugitive-slave clause of the Constitution and the law for the suppression of the foreign slave trade are each as well enforced, perhaps, as any law can ever be in a community where the moral sense of the people imperfectly supports the law itself. The great body of the people abide by the dry legal obligation in both cases, and a few break over in each. This I think, can not be perfectly cured, and it would be worse in both cases after the separation of the sections than before. The foreign slave trade, now imperfectly suppressed, would be ultimately revived without restriction in one section, while fugitive slaves, now only partially surrendered, would not be surrendered at all by the other. Physically speaking, we can not separate. We can not remove our respective sections from each other nor build an impassable wall between them. A husband and wife may be divorced and go out of the presence and beyond the reach of each other, but the different parts of our country can not do this. They can not but remain face to face, and intercourse, either amicable or hostile, must continue between them, Is it possible, then, to make that intercourse more advantageous or more satisfactory after separation than before? Can aliens make treaties easier than friends can make laws? Can treaties be more faithfully enforced between aliens than laws can among friends? Suppose you go to war, you can not fight always; and when, after much loss on both sides and no gain on either, you cease fighting, the identical old questions, as to terms of intercourse, are again upon you.

The slave trade was not controlled by any state or government. It was a purely economic enterprise, organised and financed by the free market according to the laws of supply and demand. Private slave-trading companies sold shares on the Amsterdam, London and Paris stock exchanges. Middle-class Europeans looking for a good investment bought these shares. Relying on this money, the companies bought ships, hired sailors and soldiers, purchased slaves in Africa, and transported them to America. There they sold the slaves to the plantation owners, using the proceeds to purchase plantation products such as sugar, cocoa, coffee, tobacco, cotton and rum.

The trade in human beings from Africa was a response to externa factors. At first, the labor was needed in Portugal, Spain, and in Atlantic islands such as , , and the Canaries; then came the period when the and the Spanish-American mainland needed replacements for the Indians who were victims of genocide; and then the demands of Caribbean and mainland plantation societies had to be met. The records show direct connections between levels of exports from Africa and European demand for slave labor in some part of the American . When the Dutch took in Brazil in 1634, the director of the Dutch West Indian Company immediately informed their agents on the Gold Coast that they were to take the necessary steps to pursue the trade in slaves on the adjacent coast east of the Volta—thus creating for that area the infamous name of the “Slave Coast.” When the British West Indian islands took to growing sugar cane, Gambia was one of the first places to respond. Examples of this kind of external control can be cited right up to the end of the trade, and this embraces also, since European markets in the islands became important in the eighteenth and nineteenth centuries, and since demand in places like Brazil caused Mozambicans to be shipped around the .

The United States, having been the first to abolish within the extent of their authority the transportation of the natives of Africa into slavery, by prohibiting the introduction of slaves and by punishing their citizens participating in the traffic, can not but be gratified at the progress made by concurrent efforts of other nations toward a general suppression of so great an evil. They must feel at the same time the greater solicitude to give the fullest efficacy to their own regulations. With that view, the interposition of Congress appears to be required by the violations and evasions which it is suggested are chargeable on unworthy citizens who mingle in the slave trade under foreign flags and with foreign ports, and by collusive importations of slaves into the United States through adjoining ports and territories. I present the subject to Congress with a full assurance of their disposition to apply all the remedy which can be afforded by an amendment of the law. The regulations which were intended to guard against abuses of a kindred character in the trade between the several States ought also to be rendered more effectual for their humane object.

He had now the satisfaction to say, that although he was unable to announce the immediate and actual abolition of the [slave] trade, all the Powers of Europe had agreed that it should not be extended beyond the period at which by possibility it could be terminated. They had concurred in a solemn address to the world, on the necessity of sweeping a trade, so intolerable in a moral point of view, from the face of the earth, and had pledged themselves to take no further time for that purpose than was necessary for the internal regulation of their own dominions.

The first thing I would recommend to put a stop to slavery in this country, is to leave off importing slaves. For this purpose let our assemblies unite in petitioning the king and parliament to dissolve the African committee of merchants: It is by them that the trade is chiefly carried on to America.

On the whole, the process by which captives were obtained on African soil was not trade at all. It was through warfare, trickery, banditry, and kidnapping. When one tries to measure the effect of European slave trading on the African continent, it is essential to realize that one is measuring the effect of social violence rather than trade in any normal sense of the word. Many things remain uncertain about the slave trade and its consequences for Africa, but the general picture of destructiveness is clear, and that destructiveness can be shown to be the logical consequence of the manner of recruitment of captives in Africa.

"For the sake of method, I could wish to consider the African trade, — first, with regard to the effect it has upon our own people ; and secondly, as it concerns the blacks, or, as they are more contemptuously styled, the negro slaves, whom we purchase upon the coast. But these two topics are so interwoven together, that it will not be easy to keep them exactly separate.
...
When I have charged a black with unfairness and dishonesty, he has answered, if able to clear himself, with an air of disdain, " What! do you think I am a white man ?"

Such is the nature, such are the concomitants, of the slave trade... Will not sound policy suggest the necessity of some expedient here?"