Such, indeed, was the policy of Great Britain; first, to keep alive the slavery agitation in the United States, not from motives of philanthropy, but, by thus inciting internal discord between the people of different sections of the Union, the United States would be prevented from turning its attention to further schemes of territorial extension; and second, to flood Cuba with negroes under a system of apprenticeship, in order to render it valueless to the United States. The execution of such a scheme was regarded as eminently dangerous to the peace and safety of this country, and was one which the United States could not suffer, as the inevitable effects of such a policy, carried out, would be, sooner or later, to induce a servile insurrection in the Southern States. With a colony containing a million and a half of free negroes, immediately off our shores, an expedition could at any time be organized under European aid, and sent from Cuba to our Southern States to incite a rebellion, with all its attendant horrors, among the slaves. Mr. Soulé was instructed to ascertain whether it was in contemplation, and, if so, to seek to prevent it from being carried out, and to avert its baleful consequences to ourselves, by negotiating, first, for the purchase of Cuba, and if that were impracticable, then for the independence of the Island. It was not the greed of territorial expansion that prompted the instructions which convoked the Ostend conference; nor was that sentiment the controlling one that prompted the adoption by its members of the recommendations embodied in the Aix la Chapelle letter. The document is too long to publish at length, but the material passage which contains the doctrines which the opposition would fain lead the people to believe are dangerous, is subjoined:
“But if Spain, deaf to the voice of her own interest, and actuated by stubborn pride and a false sense of honor, should refuse to sell Cuba to the United States, then the question will arise, what ought to be the course of the American Government under such circumstances? Self-preservation is the first law of nature with states as well as with individuals. All nations have at different periods acted upon this maxim. Although it has been made the pretext for committing flagrant injustice, as in the partition of Poland, and other similar cases which history records, yet the principle itself, though often abused, has always been recognized. The United States has never acquired a foot of territory except by fair purchase, or, as in the case of Texas, upon the free and voluntary application of the people of that independent state, who desired to blend their destinies with our own. Even our acquisitions from Mexico are no exception to the rule, because, although we might have claimed them by the right of conquest, in a just war, yet we purchased them for what was then considered by both parties a full and ample equivalent. Our past history forbids that we should acquire the Island of Cuba without the consent of Spain, unless justified by the great law of self-preservation. We must, in any event, preserve our own conscious rectitude and our own self-respect.