The struggles for freedom had attracted the attention of the people of the United States and were viewed by them with ever-increasing interest and sympathy.
After the acquisition of Florida, the future of the island of Cuba became of more or less importance to the people of the United States and has remained so to the present day. As President Cleveland said in his message of December, 1896: "It is so near to us as to be hardly separated from our own territory." The truth of this is apparent when it is remembered that the straits of Florida can be crossed by steamer in five hours.
It began to be feared that Cuba might fall into the hands of England or France and the governments of those countries as well as that of Spain were informed that such a disposition of it would never be consented to. Its position at the entrance of the gulf of Mexico could not be disregarded. The American government declared its willingness that it should remain a Spanish colony, but stated it would never permit it to become the colony of another country.
In 1825 Spain made a proposition that, in consideration of certain commercial concessions the United States should guarantee to her the possession of Cuba; but this proposition was declined on the ground that such a thing would be contrary to the established policy of the United States.
One of the most important consequences of Spain's efforts to regain possession of the South American republics, the independence of which had been recognized by the United States, was the formulation of what has since been known as the "Monroe Doctrine." In his message of December 2, 1823, President Monroe promulgated the policy of neither entangling ourselves in the broils of Europe, nor suffering the powers of the old world to interfere with the affairs of the new. He further declared that any attempt on the part of the European powers "to extend their system to any portion of this hemisphere" would be regarded by the United States as "dangerous to our peace and safety," and would accordingly be opposed.
Although since then there has been more or less friction with England over the Monroe doctrine, at that time she greatly aided in its becoming established as a feature of international law, and strengthened the position of the United States, by her recognition of the South American republics.
The Spanish slave code, by which the slave trade, which had formerly been a monopoly, was made free, had given a great stimulus to the importation of slaves. It was almost brought to an end, however, by the energetic efforts of Captain-General Valdez. But the increased consumption of sugar in Great Britain, owing to reduction of duty and the placing of foreign and British sugars on the same basis gave a new stimulus to the traffic; and, in their own pecuniary interest, ever more prominent with them than any question of humanity, the Spanish relaxed their efforts, and the slave trade attained greater dimensions than ever before.
In 1844 there occurred an uprising which was more serious than any which had preceded it. The slaves on the sugar plantations in the neighborhood of Matanzas were suspected of being about to revolt. There was no real proof of this, and in order to obtain evidence a large number of slaves were tortured. It was evident that Spain was still ready, if in her opinion occasion required it, to have recourse to the barbarities of the old Inquisitorial days. By evidence manufactured by such outrageous methods, one thousand three hundred and forty-six persons were tried and convicted, of whom seventy-eight were shot, and the others punished with more or less severity. Of those declared guilty, fourteen were white, one thousand two hundred and forty-two free colored persons, and fifty-nine slaves.
The project of annexation to the United States was first mooted in 1848, after the proclamation of the French republic. The people of the slave States, in view of the increasing population and the anti-slavery feeling of the North and West were beginning to feel alarmed as to the safety of the "peculiar institution," and there was a strong sentiment among them in favor of annexing Cuba and dividing it up into slave states. President Polk, therefore, authorized the American minister at Madrid to offer one hundred million dollars for Cuba; but the proposition was rejected in the most peremptory manner. A similar proposal was made ten years afterward in the Senate, but after a debate it was withdrawn.
The next conspiracy, rebellion or revolution (it has been called by all these names according to the point of view and the sympathies of those speaking or writing of it) broke out in 1848. It was headed by Narciso Lopez, who was a native of Venezuela, but who had served in the Spanish army, and had attained therein the rank of major-general.