Why were american expansionists interested in hawaii?

Interest in HAWAII began in America as early as the 1820s, when New England missionaries tried in earnest to spread their 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. The United States government provided generous terms to Hawaiian sugar growers, and after the Civil War, profits began to swell.

Dpolitical is the answer