Northern Rhodesia had been detained without trial, following claims that they had planned the indiscriminate killing of Europeans and Asians, and of African opponents, the so-called "murder plot". Shortly afterwards, on 12 March 1959, the governor of Northern Rhodesia also declared a State of emergency there, arrested 45 Zambia African National Congress including Kaunda and banned the party. Kaunda later received a 19-month prison sentence for conspiracy, although no credible evidence of conspiracy was produced. The declaration of States of emergency in both Northern Rhodesia and Nyasaland marked the end of attempts by their nationalist parties to work within the colonial system,
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