Palau - Republic of Palau

The country was originally settled around 3,000 years ago by migrants from the Philippines and sustained a Negrito population until around 900 years ago. The islands were first visited by Europeans in the 18th century, and were made part of the Spanish East Indies in 1885. Following Spain's defeat in the Spanish–American War in 1898, the islands were sold to Imperial Germany in 1899 under the terms of the German–Spanish Treaty, where they were administered as part of German New Guinea. The Imperial Japanese Navy conquered Palau during World War I, and the islands were later made a part of the Japanese-ruled South Pacific Mandate by the League of Nations. 

During World War II, skirmishes, including the major Battle of Peleliu, were fought between American and Japanese troops as part of the Mariana and Palau Islands campaign. Along with other Pacific Islands, Palau was made a part of the United States-governed Trust Territory of the Pacific Islands in 1947. Having voted against joining the Federated States of Micronesia in 1979, the islands gained full sovereignty in 1994 under a Compact of Free Association with the United States.

Palau was originally settled between the 3rd and 2nd millennia BC, most likely from the Philippines or Indonesia.

Sonsorol, part of the Southwest Islands, an island chain approximately 600 kilometres (370 mi) from the main island chain of Palau, was sighted by Europeans as early as 1522, when the Spanish mission of the Trinidad, the flagship of Ferdinand Magellan's voyage of circumnavigation, sighted two small islands around the 5th parallel north, naming them "San Juan".

British traders became prominent visitors to Palau in the 18th century, followed by expanding Spanish influence in the 19th century. Following its defeat in the Spanish–American War, Spain sold Palau and most of the rest of the Caroline Islands to Germany in 1899. Control passed to Japan in 1914 and during World War II the islands were taken by the United States in 1944, with the costly Battle of Peleliu between 15 September and 25 November when more than 2,000 Americans and 10,000 Japanese were killed. The islands passed formally to the United States under United Nations auspices in 1947 as part of the Trust Territory of the Pacific Islands.