These last acts seem to have aroused the consciousness of the Congress to the rapidity with which the whole country was becoming again subject to the slave-holding interests. The Congress resisted the importunities of the Indiana leaders, and after giving South Carolina a reasonable time to re-enact her law abolishing the foreign slave-trade, without effect, proceeded itself to abolish the trade from the first moment that the Constitution permitted this to be done, from January 1st, 1808. [Sidenote: Cotton culture and the cotton-gin.] [Sidenote: The effect of the return to the arts of peace upon the ideas concerning slavery.] It has been customary to ascribe the great revulsion {52} of view in regard to slavery, which certainly manifested itself everywhere in the United States between 1790 and 1807, to cotton culture and the cotton-gin. The invention of the cotton-gin, in the first part of the last decade of the eighteenth century, and the increased demand for cotton fabrics throughout the world, had made the cultivation of cotton highly profitable. An increase in cotton culture was naturally encouraged by such enhanced profits, and this tendency produced an increased demand for negro labor and for new lands, since the cotton crop requires a warm climate and low lands, and exhausts the soil very rapidly. Those parts of the country adapted to cotton-raising felt, therefore, a renewed interest in the increase of negro labor and in territorial extension. And those parts not so adapted felt an indirect interest in the same, since the increased and still increasing profits of the cotton culture made a market for their slaves and a carrying trade for their shipowners. There is no doubt that such was the main cause of the great change of view in regard to the question of negro slavery which the country experienced between 1790 and 1810, but it was not the sole cause. It was inevitable that, when the men of that era passed out of the excited state of mind and feeling produced by the War with the motherland, and came to the task of re-establishing the relations of peace and every-day life and business, they should regain a calmness of judgment, a respect for vested rights, and a regard for customary relations, which placed the political philosophy of 1776 under many limitations and qualifications, some of which, certainly, were sound and valuable. It is only when we take all of these considerations together that we comprehend the reasoning of the men of the first decade of this {53} century upon the great question. They saw a great interest developing which was bringing wealth and comfort into an impoverished country. They knew that it could be then sustained only by negro labor. They did not believe that the negro would work unless forced to it by the white man. They thought it was better for the negro himself to have food, clothing, and shelter, in slavery, than to starve, or become a robber, in liberty. They felt, on