At the end of the 19th century, Germany occupied Western Samoa.After a war, the United Nations handed it over to New Zealand.After the Second World War, the United Nations authorized New Zealand to continue to host.The people of Western Samoa fought a long and tireless anti-colonial struggle.

Between 1920 and 1936, the Mao movement (that is, the political opposition) was launched against New Zealand's colonial rule, putting the slogan "Samoa of the Samoans". Later, a number of mass resistance movements broke out. In 1960, the 15th General Assembly adopted a resolution by the Western Samoa citizens' referendum to decide on its affiliation. In May 1961, the citizens' referendum ended the custody state. In 1962, New Year's Day officially declared independence. Since 1963, June 1 became Independence Day. The country's name was Western Samoa Independence State.