In January, 1798, Miranda returned to England. As Spain was now the close ally of France, he hoped to secure the coöperation of Great Britain in his scheme. He also hoped to secure aid from the United States. The people of Kentucky and Tennessee were far from satisfied with the provisions of the Spanish treaty of 1795 in regard to the navigation of the Mississippi River. Then, too, just at this time, war between the United States and France seemed inevitable, on account of the resentment by France of the Jay treaty and her treatment of the American representatives. Washington had been called from his retirement at Mt. Vernon to assume the post of commander-in-chief of the army, while the active command was to be given to Hamilton. Hamilton had expressed great interest in Miranda's projects and was a man of known ambition. His appointment, therefore, as the virtual commander-in-chief of the American army made Miranda hopeful of his coöperation.
Mr. King, the American minister at London, entered heartily into the plans of General Miranda, and his correspondence on that subject, during the year 1798, with his government and with Hamilton is quite voluminous.[18] For a time it seemed as if Great Britain and the United States would coöperate for the purpose of revolutionizing Spanish America. The plan, as entertained by Miranda and Hamilton, was for England to supply the naval force and the United States the land forces. Miranda believed that six or eight vessels of the line and four or five thousand troops would be sufficient,[19] though Hamilton thought it would require ten thousand troops. England's participation in the scheme depended upon the relations between France and Spain. Mr. King wrote to his government, February 26, 1798:
Two points have within a fortnight been settled in the English cabinet respecting South America. If Spain is able to prevent the overthrow of her present government and to escape being brought under the entire control of France, England (between whom and Spain, notwithstanding the war, a certain understanding appears to exist) will at present engage in no scheme to deprive Spain of her possessions in South America. But if, as appears probable, the army destined against Portugal, and which will march through Spain, or any other means which may be employed by France, shall overthrow the Spanish government, and thereby place the resources of Spain and of her colonies at the disposal of France, England will immediately commence the execution of a plan long since digested and prepared for the complete independence of South America. If England engages in this plan, she will at Philadelphia propose to the United States to coöperate in its execution, Miranda will be detained here, under one pretense or another, until events shall decide the conduct of England.[20]
England's policy in regard to South America for the next twenty years substantially confirmed the interpretation of her motives here given by Mr. King.
During the summer of 1798 Mr. King had several conferences with the British ministry in regard to the Spanish-American question, but it was always understood that they were personal and wholly unauthorized. What occurred at these interviews was, of course, always communicated to the American government, but as they were unofficial and communicated merely in the nature of information, the State Department preferred to keep the matter on the same basis and did not refer to the matter in its dispatches to Mr. King. This caused him no little annoyance.[21] In the same way no notice was taken of General Miranda's letter to President Adams.
Hamilton, however, was very frank in the expression of his views both to General Miranda and to Mr. King. Under date of August 22, 1798, he wrote to the latter:
I have received several letters from General Miranda. I have written answers to some of them, which I send you to deliver or not, according to your estimate of what is passing in the scenes where you are. Should you deem it expedient to suppress my letter, you may do it and say as much as you think fit on my part in the nature of a communication through you. With regard to the enterprise in question, I wish it much to be undertaken, but I should be glad that the principal agency was in the United States—they to furnish the whole land force necessary. The command in this case would very naturally fall upon me, and I hope I should disappoint no favorable anticipation.
The United States, however, succeeded in coming to an understanding with France, while England was unwilling to deal such a serious blow to Spain as long as there was a chance of arraying her against Napoleon. The communication of the views of the British government at Philadelphia, to which Mr. King referred as a preliminary, was never made. Miranda's hopes finally fell through at the reëstablishment of peace in Europe by the treaty of Amiens, which lasted until 1803. He lingered in Europe some time longer, until, wearied out by years of fruitless negotiation with the British government, he, for the time being, gave up all hope of success in that quarter and returned once more to the United States.
Arriving in New York from England in November, 1805, Miranda proceeded to lay his cause once more before Mr. King, who had so warmly befriended him in London, and to solicit his coöperation in fitting out an expedition for South America. While expressing his full sympathy with the cause, Mr. King stated emphatically that he could render him no assistance, nor could any individuals safely do so, without the countenance of the government. He, therefore, advised Miranda to go to Washington and lay his plans before the administration. This Miranda did. He was admitted to informal conferences both with President Jefferson and Secretary of State Madison. Upon his return to New York he represented to those interested in his schemes that he had secured from the government a secret sanction of his project, and that the administration, though unwilling to take the initiative, would support the undertaking so soon as the standard of revolution should once have been raised on the Spanish Main. Miranda's chief supporter was Colonel Smith, surveyor of the port of New York, whose influence as a public official in close touch with the administration was decisive in persuading many adventurous spirits to join the expedition with the belief that it was really secretly backed by the government of the United States.
Miranda left New York in the early part of February, 1806, in the Leander, with an imperfectly equipped force of about 200 men, most of whom were commissioned as officers and promised commands in the South American army, which was expected to spring from the soil at the magic touch of Miranda's step upon the shores of his native land. The ship proceeded to Jacquemel, San Domingo, where Miranda expected to get the necessary supplies and reinforcements. Here disappointments awaited him, disputes with the ship's captain ensued, and over a month was fruitlessly spent, while the Spanish authorities on the Main had time to put themselves on the alert. It was not until the last of April that the expedition, reinforced by two schooners, appeared off the coast of Venezuela near Porto Cabello. They were attacked by two Spanish vessels, which captured the schooners with about sixty men and large stores, while the Leander ignominiously took to flight.