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 mining was booming. When Northern Rhodesia became a Protectorate under the British Empire on 1 April 1924, a Legislative Council was established on which the Governor of Northern Rhodesia sat "ex officio" as Presiding Officer. The initial council consisted entirely of nominated members, as no procedure existed at the time for holding elections. However, the members were divided between the "official members" who held executive posts in the administration of the Protectorate, and the "unofficial members" who held no posts. In 1926, a system of election was worked out and the first election was held for five elected unofficial members,