Interest in hawaii began in America as early as the 1820's, when New England missionaries tried in ernest to spread there faith.
Since the 1840s, keeping european powers out of hawaii became a principal foreign policy goal. Americans acquired a true foothold in hawaii as a result of the sugar trade.
when congress approved the mckinley tariff, which raised import rates on foreign suagr. Hawaiian sugar planters were now being undersold in the American market, and as a result, a depression swept the islands.
In January 1893, the planters staged an uprising to overthrow the Queen. At the same time, they appealed to the United States armed forces for protection. Without Presidential approval, marines stormed the islands, and the American minister to the islands raised the stars and stripes in Honolulu. The Queen was forced to abdicate, and the matter was left for Washington politicians to settle.
The matter was prolonged until after Cleveland left office. When war broke out with Spain in 1898, the military significance of Hawaiian naval bases as a way station to the Spanish Philippines outweighed all other considerations. President William McKinley signed a joint resolution annexing the islands, much like the manner in which Texas joined the Union in 1845.
Hawaii remained a territory until granted statehood as the fiftieth state in 1959. There was more than one way to acquire more land. If the globe had already been claimed by imperial powers, the United States could always seize lands held by others.