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 five shillings a year, but in 1920 the rate of hut tax was sharply increased, and often doubled, to provide more workers for the Southern Rhodesian mines, particularly the coal mines of Wankie. At this time the Company considered the principal economic benefit of Northern Rhodesia to be as a reservoir for migrant labour which could be called upon for Southern Rhodesia. British common law became the basis of the administration of Southern and Northern Rhodesia, unlike Roman Dutch law which applied in South Africa. In 1889, the British South African Company was given the power to establish a police