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 of the main railway line was reserved for European settlement and farming. In 1938, it was reported that the Native Reserves were overcrowded, while much of the land reserved for Europeans was unoccupied and unused In 1918, the Privy Council of the United Kingdom had rejected the British South Africa Company claims to unalienated land in Southern Rhodesia, and this raised questions about the company's claim to unalienated land north of the Zambezi. However, the company's claim in Northern Rhodesia was based on concessions granted rather than conquest and, although a Northern Rhodesian parliamentary Committee in 1921 recommended that these