Micronesia The regional name for the widely spread tiny islands of the north Pacific, numbering some 2,100. Except for US-controlled
Guam, they came under German control in 1885, but during World War I they passed to Japanese administration, which was confirmed as a
League of Nations Mandate after the war. In World War II, Japanese control over the area was extended through the invasion of Guam, which enabled them to block the US advance to liberate the Philippines until 1944. After the war, Micronesia came under the control of the USA, which has administered it as a
UN trust territory, with the exception of Guam.
From 1946 (until 1963), Micronesia was the scene of extended nuclear testing. The USA exploded 66 atmospheric test weapons on
Bikini and
Enewetak Islands. The test of 1 March 1954 not only made Bikini permanently uninhabitable but has resulted in extensive cancer cases and deformities among the population of the neighbouring island of
Rongelap. From the 1970s, four separate island states emerged. The
Northern Mariana Islands, the
Federated States of Micronesia, and the
Republic of the Marshall Islands negotiated separate autonomy statutes in 1979. While the USA remained responsible for their defence, they received full independence on 3 November 1986, which was recognized by the UN on 22 December 1990. The island state of
Palau (Belau) gained independence on 30 September 1994, but retained an association with the USA whereby the latter remained responsible for defence and foreign policy. In 1998 a nuclear claims tribunal was created to determine compensation from the US for victims of the tests and their descendents.