In 1980, Rhodesia, Britain's last African colony, became the independent nation of Zimbabwe. The New Hebrides achieved independence (as Vanuatu) in 1980, with Belize following suit in 1981. The passage of the British Nationality Act 1981, which reclassified the remaining Crown colonies as "British Dependent Territories" (renamed British Overseas Territories in 2002) meant that, aside from a scattering of islands and outposts the process of decolonisation that had begun after the Second World War was largely complete. In 1982, Britain's resolve in defending its remaining overseas territories was tested when Argentina invaded the Falkland Islands, acting on a long-standing claim that dated back to the Spanish Empire. Britain's ultimately successful military response to retake the islands during the ensuing Falklands War was viewed by many to have contributed to reversing the downward trend in Britain's status as a world power. The same year, the Canadian government severed its last legal link with Britain by patriating the Canadian constitution from Britain. The 1982 Canada Act passed by the British parliament ended the need for British involvement in changes to the Canadian constitution. Similarly, the Constitution Act 1986 reformed the constitution of New Zealand to sever its constitutional link with Britain, and the Australia Act 1986 severed the constitutional link between Britain and the Australian states. In 1984, Brunei, Britain's last remaining Asian protectorate, gained its independence.