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 local rulers and British legislation gave it the status of a protectorate. The territory attracted a relatively small number of European settlers, but from the time these first secured political representation, they agitated for white minority rule, either as a separate entity or associated with Southern Rhodesia and possibly Nyasaland. The mineral wealth of Northern Rhodesia made full amalgamation attractive to Southern Rhodesian politicians, but the British Government preferred a looser association to include Nyasaland. This was intended to protect Africans in Northern Rhodesia and Nyasaland from discriminatory Southern Rhodesian laws. The Federation of Rhodesia and Nyasaland formed in 1953