When the South had advocated the annexation of Texas, its statesmen had been denounced as expansionists and imperialists. The same fate awaited the statesmen of the new order who were favoring the extension of United States territory to include some of the contiguous islands that offered special opportunities for certain powerful financial interests.

The struggle began over the annexation of Hawaii. After numerous attempts to annex Hawaii to the United States a revolution was finally consummated in Honolulu in 1893. At that time, under treaty provisions, the neutrality of Hawaii was guaranteed by the United States. Likewise, "of the capital invested in the islands, two-thirds is owned by Americans." This statement is made in "Address by the Hawaiian Branches of the Sons of the American Revolution, the Sons of Veterans, and the Grand Army of the Republic to their compatriots in America Concerning the Annexation of Hawaii." (1897.) These advocates of annexation state in the same address that: "The revolution (of 1893) was not the work of filibusterers and adventurers, but of the most conservative and law-abiding citizens, of the principal tax-payers, the leaders of industrial enterprises, etc." The purpose behind the revolution seemed clear. Certain business men who had sugar and other products to sell in the United States, believed that they would gain, financially, by annexation. They engineered the revolution of 1893 and they were actively engaged in the agitation for annexation that lasted until the treaty of annexation was confirmed by the United States in 1898. The matter was debated at length on the floor of the United States Senate, and an investigation revealed the essential facts of the case.

The immediate cause of the revolution in 1893 was friction over the Hawaiian Constitution. After some agitation, a "Committee of Safety" was organized for the protection of life and property on the islands. Certain members of the Hawaiian government were in favor of declaring martial law, and dealing summarily with the conspirators. The Queen seems to have hesitated at such a course because of the probable complications with the government of the United States.

The U. S. S. Boston, sent at the request of United States Minister Stevens to protect American life and property in the Islands, was lying in the harbor of Honolulu. After some negotiations between the "Committee of Safety" and Minister Stevens, the latter requested the Commander of the Boston to land a number of marines. This was done on the afternoon of January 16, 1893. Immediately the Governor of the Island of Oahu and the Minister of Foreign Affairs addressed official communications to the United States Minister, protesting against the landing of troops "without permission from the proper authorities." Minister Stevens replied, assuming full responsibility.

On the day following the landing of the marines, the Committee of Safety, under the chairmanship of Judge Dole, who had resigned as Justice of the Supreme Court of Hawaii in order to accept the Chairmanship of the Committee, proceeded to the government building, and there, under cover of the guns of the United States Marines, who were drawn up for the purpose of protecting the Committee against possible attack, a proclamation was read, declaring the abrogation of the Hawaiian monarchy, and the establishment of a provisional government "to exist until terms of union with the United States have been negotiated and agreed upon." Within an hour after the reading of this proclamation, and while the Queen and her government were still in authority, and in possession of the Palace, the Barracks, and the Police Station, the United States Minister gave the Provisional Government his recognition.

The Queen, who had 500 soldiers in the Barracks, was inclined to fight, but on the advice of her counselors, she yielded "to the superior force of the United States of America" until the facts could be presented at Washington, and the wrong righted.

Two weeks later, on the first of February, Minister Stevens issued a proclamation declaring a protectorate over the islands. This action was later repudiated by the authorities at Washington, but on February 15, President Harrison submitted a treaty of annexation to the Senate. The treaty failed of passage, and President Cleveland, as one of his first official acts, ordered a complete investigation of the whole affair.

The Senate Committee on Foreign Relations submitted a report on the matter February 26, 1894. Four members referred to the acts of Minister Stevens as "active, officious and unbecoming participation in the events which led to the revolution." All members of the committee agreed that his action in declaring a protectorate over the Islands was unjustified.

The same kind of a fight that developed over the annexation of Texas now took place over the annexation of Hawaii. A group of senators, of whom Senator R. F. Pettigrew was the most conspicuous figure, succeeded in preventing the ratification of the annexation treaty until July 7, 1898. Then, ten weeks after the declaration of the Spanish-American War, under the stress of the war-hysteria, Hawaii was annexed by a joint resolution of Congress.

The Annexation of Hawaii marks a turning point in the history of the United States. For the first time, the American people secured possession of territory lying outside of the mainland of North America. For the first time the United States acquired territory lying within the tropics. The annexation of Hawaii was the first imperialistic act after the annexation of Texas, more than fifty years before. It was the first imperialistic act since the capitalists of the North had succeeded the slave-owners of the South as the masters of American public life.