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
1964 Southern Rhodesian independence referendum made a Unilateral Declaration of Independence, making the country a de facto independent state until returning to British colonial rule in 1979 following the Lancaster House Agreement.The British Government did not accept Southern Rhodesian independence as the referendum was not representative of all of Southern Rhodesia. Voter turnout was 61.9%. 1964 Southern Rhodesian independence referendum A referendum on independence was held in Southern Rhodesia on 5 November 1964. The question put to voters was "Are you in favour of or against Southern Rhodesia obtaining independence on the basis of the 1961 Constitution of Southern Rhodesia. Ian Smith called a meeting