American Samoa

Settled as early as 1000 B.C., Samoa was not reached by European explorers until the 18th century. International rivalries in the latter half of the 19th century were settled by an 1899 treaty in which Germany and the US divided the Samoan archipelago. The US formally occupied its portion - a smaller group of eastern islands with the excellent harbor of Pago Pago - the following year.
Source: World Factbook 2020