markets for New Zealand goods, mainly in the Asia-Pacific regions. Loosened ties with Britain (1970s–present) A major breakaway from British influence occurred in the mid 1960s as a result of the Vietnam War. Under the ANZUS Treaty and growing concerns about Communist influences in the Asia-Pacific region, the United States pressured the governments of Australia and New Zealand to contribute to the war in Vietnam, eventually resulting in both nations sending forces. New Zealand's involvement lasted from 1963 until 1975, consisting of both military and non-military aid. The Vietnam War was the first conflict that New Zealand entered that did not involve Britain or any other Commonwealth nations other than Australia. Although the war was largely unpopular in New Zealand, the conflict brought closer ties between New Zealand and the United States militarily, at least until 1986 when New Zealand was suspended from ANZUS due to its anti-nuclear policy. This led to the Reagan administration cutting major military and diplomatic ties between Wellington and Washington, downgrading New Zealand from 'ally', to 'friend'. A more significant move towards independence in a practical rather than legal sense came in 1973 when Britain joined the European Economic Community. The move, although anticipated, caused major economic structural adjustment issues, as the vast majority of New Zealand's exports went to Britain at that time. The election of the nationalist Third Labour Government of Norman Kirk in 1972 brought further changes. Kirk's Government introduced the Constitution Amendment Act 1973, which altered the New Zealand Constitution Act 1852 so that the New Zealand Parliament could legislate extra-territorially. In Re Ashman the Supreme Court (since renamed the High Court, not to be confused with the contemporary Supreme Court) held that as a result of the 1973 Act, New Zealand had formally severed the New Zealand Crown from the British Crown. The Third Labour Government also passed the Royal Titles Act 1974, changing the Queen's style and titles to be solely Queen of New Zealand. The nationality listed in New Zealand passports for the passport holder was changed in 1973 from "British Subject and New Zealand Citizen" to simply "New Zealand citizen". In 1983 a new Letters Patent was issued, written by a New Zealander and signed by the then New Zealand Prime Minister. The new letters patent declared New Zealand as the "Realm of New Zealand", and repealed the previous Imperial Letters Patent of 1917. The final practical