Prime Minister of Rhodesia held the post until the end of Federation on 31 December 1963. When Northern Rhodesia gained independence as Zambia on 24 October 1964, Southern Rhodesia began to refer to itself simply as "Rhodesia". Prime Minister Ian Smith's government issued a Unilateral Declaration of Independence from Britain in 1965, and he remained Prime Minister when the country was declared a republic in 1970. Under the Internal Settlement in 1979, after a long period of conflict, the country became known as Zimbabwe-Rhodesia, with Abel Muzorewa as its first black Prime Minister. None of these acts were recognised internationally, and under the Lancaster
Northern Rhodesia ordinary constituencies, although all votes counted in full. Before the end of BSAC administration, Northern Rhodesian law was in conformity with the laws of England and Wales and its High Court of Northern Rhodesia was ultimately subordinate to those of the United Kingdom. This continued after 1924; all United Kingdom statutes in force on 17 August 1911 were applied to Northern Rhodesia, together with those of later years if specific to the Protectorate. Where Africans were parties before courts, Native law and customs were applied, except if they were "repugnant to natural justice or morality", or inconsistent with any other