an unincorporated overseas territory of the US comprising a group of islands in the southern Pacific Ocean, to the east of Samoa and south of the Kiribati group; pop. 65,600 (est. 2009); capital, Fagatogo. In 1899 the US acquired rights to the islands by agreement with Germany and Britain, and in April 1900 the two main islands were ceded to the US by their chiefs. Further islands were handed over in succeeding years.