Although the United States government was a party to endless negotiations in regard to an inter-oceanic canal, there were only three treaties of any practical importance prior to the close of the nineteenth century, by which it acquired rights and assumed obligations on that account.[142] These were (1) the treaty with New Granada (Colombia) of 1846; (2) the Clayton-Bulwer treaty with England of 1850; and (3) the treaty with Nicaragua of 1867. We shall proceed to examine these in detail.
The treaty with New Granada was signed at Bogota, December 12, 1846, and ratified by both governments in 1848. It did not differ materially from the general draft of treaties, except in the thirty-fifth article, which was of a special character and related to the Isthmus of Panama. By this article "the government of New Granada guarantees to the government of the United States that the right-of-way or transit across the Isthmus of Panama, upon any modes of communication that now exist or that may be hereafter constructed, shall be open and free to the government and citizens of the United States," for the transportation of all articles of lawful commerce upon the same terms enjoyed by the citizens of New Granada.
And in order to secure to themselves the tranquil and constant enjoyment of these advantages, and for the favors they have acquired by the 4th, 5th, and 6th articles of this treaty, the United States guarantee positively and efficaciously to New Granada, by the present stipulation, the perfect neutrality of the before-mentioned isthmus, with the view that the free transit from the one to the other sea may not be interrupted or embarrassed in any future time while this treaty exists; and, in consequence, the United States also guarantee, in the same manner, the rights of sovereignty and property which New Granada has and possesses over the said territory.[143]
This treaty was to remain in force for twenty years, and then, if neither party gave notice of intended termination, it was to continue in force, terminable by either party at twelve months' notice. This treaty was in full force when the Panama revolution of 1903 took place. Under the protection of this treaty the Panama Railroad Company, composed mainly of citizens of the United States, secured a charter from New Granada, and between 1850 and 1855 constructed a railroad across the isthmus along the line of the proposed Panama canal. In consequence of the riot at Panama in 1856, efforts were made by the United States to modify this treaty so as to give the United States greater control and power to protect the means of transit, but without success.[144] Other attempts to modify it in 1868 and 1870 likewise failed.[145]
In 1862 the Granadian government, through its representative at Washington, notified the United States that a revolutionary chief, who was then trying to subvert the Granadian confederation, had sent an armed force to occupy the Isthmus of Panama, and the government of Granada called upon the United States to enforce its guarantee. Simultaneously the same information was received from the United States consul at Panama, and the President instructed the United States naval commander at that port to protect at all hazards and at whatever cost the safety of the railroad transit across the isthmus.
The Granadian government, however, was not satisfied with this action, and urged the United States to land a body of troops at Panama, suggesting that it consist of 300 cavalry. Under the circumstances, President Lincoln hesitated to take such action without consulting Great Britain and France, and Mr. Seward instructed our representatives at London and Paris to seek an understanding with those governments in regard to the matter. He declared:
This government has no interest in the matter different from that of other maritime powers. It is willing to interpose its aid in execution of its treaty and for the benefit of all nations. But if it should do so it would incur some hazard of becoming involved in the revolutionary strife which is going on in that country. It would also incur danger of misapprehension of its object by other maritime powers if it should act without previous consultation with them.[146]
In a conference between Mr. Adams and Lord John Russell, the latter declared that he did not consider that the contingency had arisen which called for intervention; that so far as he could learn, no attempt had been made to obstruct the free transit across the isthmus. The French government took substantially the same view.[147] In questions of a similar nature that arose later, the attorney-general of the United States expressed the opinion that the guarantee by the United States of Granadian sovereignty and property in the territory of the isthmus was only against foreign governments, and did not authorize the United States to take sides with one or the other party in the intestine troubles of that nation.
In April, 1885, the Colombian government, which was embarrassed by civil war, called upon the United States for the fulfillment of the treaty of 1846, to secure the neutrality and sovereignty of the isthmus. President Cleveland at once sent a body of troops to the isthmus with instructions to confine their action to preventing the transit and its accessories from being interrupted or embarrassed. As soon as peace was reëstablished, the troops of the United States were withdrawn.[148]
Four years after the signature of the above treaty with Colombia, and two years after its ratification by the Senate, the United States and Great Britain executed what is popularly known as the Clayton-Bulwer treaty. It is of great importance to understand clearly the circumstances under which this treaty was negotiated.