Palau officially the Republic of Palau and historically Belau, Palaos or Pelew, is an island country located in the western Pacific Ocean. The country contains approximately 340 islands, and together with parts of the Federated States of Micronesia, forms the western chain of the Caroline Islands. Its area is 466 square kilometers (180 sq mi). The most populous island is Koror. The capital Ngerulmud is located on the nearby island of Babeldaob, in Melekeok State. Palau shares maritime boundaries with international waters to the north, Micronesia to the east, Indonesia to the south, and the Philippines to the west.
Politically, Palau is a presidential republic in free association with the United States, which provides defense, funding, and access to social services. Legislative power is concentrated in the bicameral Palau National Congress. Palau's economy is based mainly on tourism, subsistence agriculture and fishing, with a significant portion of gross national product (GNP) derived from foreign aid. The country uses the United States dollar as its currency. The islands' culture mixes Micronesian, Melanesian, Asian, and Western elements. Ethnic Palauans, the majority of the population, are of mixed Micronesian, Melanesian, and Austronesian descent. A smaller proportion of the population is of Japanese descent. The country's two official languages are Palauan (a member of the Austronesian language family) and English, with Japanese, Sonsorolese, and Tobian recognized as regional languages.