Rhodesia's Unilateral Declaration of Independence in the context of "Ian Smith"

Rhodesia (/roʊˈdiːʒə/ roh-DEE-zhə, /roʊˈdiːʃə/ roh-DEE-shə; Shona: Rodizha), officially the Republic of Rhodesia from 1970, was an unrecognised country in Southern Africa that existed from 1965 to 1979. Rhodesia served as the de facto successor state to the British colony of Southern Rhodesia following a unilateral declaration of independence issued by the ruling white-minority government. Throughout this fourteen-year period, Rhodesia faced internal conflict and political unrest. Following the Lancaster House Agreement in 1979, the territory returned to British political control and then subsequently gained internationally recognised independence as Zimbabwe in 1980.

The rapid decolonisation of Africa in the late 1950s and early 1960s alarmed a significant proportion of Southern Rhodesia's white population. In an effort to delay the transition to black majority rule, the predominantly white Southern Rhodesian government issued its own Unilateral Declaration of Independence (UDI) from the United Kingdom on 11 November 1965. The new nation, identified simply as Rhodesia, initially sought recognition as an autonomous realm within the Commonwealth of Nations, but reconstituted itself as a republic in 1970. Following the declaration of independence in 1965, the United Nations Security Council passed a resolution that called upon all states not to grant recognition to Rhodesia. Two African nationalist parties, the Zimbabwe African People's Union (ZAPU) and Zimbabwe African National Union (ZANU), launched an armed insurgency against the government upon UDI, sparking the Rhodesian Bush War. Growing war weariness, diplomatic pressure, and an extensive trade embargo imposed by the United Nations prompted Rhodesian prime minister Ian Smith to concede to majority rule in 1978. However, elections and a multiracial provisional government, with Smith succeeded by moderate Abel Muzorewa, failed to appease international critics or halt the war. By December 1979, Muzorewa had secured an agreement with ZAPU and ZANU, allowing Rhodesia to briefly revert to colonial status pending new elections under British supervision. ZANU secured an electoral victory in 1980, and the country achieved internationally recognised independence in April 1980, as Zimbabwe.

A unilateral declaration of independence (UDI) or "unilateral secession" is a formal process leading to the establishment of a new state by a subnational entity which declares itself independent and sovereign without a formal agreement with the state from which it is seceding. The term was first used when Rhodesia declared independence in 1965 from the United Kingdom (UK) without an agreement with the UK.

The Lancaster House Agreement is an agreement signed on 21 December 1979 in Lancaster House, following the conclusion of a constitutional conference where different parties discussed the future of Zimbabwe Rhodesia, formerly known as Rhodesia. The agreement effectively concluded the Rhodesian Bush War. It also marked the nullification of Rhodesia's Unilateral Declaration of Independence, as British colonial authority was to be restored for a transitional period to internationally recognised independence, during which free elections under supervision by the British government would take place. Crucially, ZANU and ZAPU, the political wings of ZANLA and ZIPRA (who had been waging an escalating insurgency since 1964), would be permitted to stand candidates in the forthcoming elections. This was however conditional to compliance with the ceasefire and the verified absence of voter intimidation.

Public holidays in Rhodesia, a historical region in southern Africa equivalent to today's Zimbabwe and Zambia—formerly Southern and Northern Rhodesia, respectively—were largely based around milestones in the region's short history. Annual holidays marked various aspects of the arrival of white people during the 1880s and 1890s, as well as the respective unilateral declarations of independence (1965) and of republican government (1970). On these days, most businesses and non-essential services closed. A number of Christian holidays were also observed according to custom, in the traditional British manner, and referred to in official documents by name—Christmas Day, for example, or Easter Monday.

Rhodesian non-work days were first defined in 1895, by The Bills of Exchange Regulations passed by Leander Starr Jameson, the second administrator of the territory appointed by the British South Africa Company. Holidays were instituted along traditional British lines, with some others created exclusively for Rhodesia: Shangani Day, on 4 December, marked the anniversary of the Shangani Patrol being killed in battle, while Rhodes's Day and Founders' Day—respectively commemorating Company chief Cecil Rhodes and his contemporaries—were held consecutively, starting on the first or second Monday of each July, to create the annual four-day "Rhodes and Founders' weekend". Shangani Day was replaced as a public holiday by Occupation Day in 1920, but continued to be unofficially marked thereafter. Occupation Day, held on 12 September each year, marked the anniversary of the arrival of the Pioneer Column at Fort Salisbury in 1890, and their raising of the Union Jack on the kopje overlooking the site. It was renamed Pioneers' Day in 1961.

Zimbabwe Rhodesia (/zɪmˈbɑːbweɪ roʊˈdiːʒə, zɪmˈbɑːbwi roʊˈdiːʒə/), alternatively known as Zimbabwe-Rhodesia, also informally known as Zimbabwe or Rhodesia, was a short-lived unrecognised sovereign state that existed from 1 June 1979 to 18 April 1980, though it lacked international recognition. Zimbabwe Rhodesia was preceded by another state named the Republic of Rhodesia and was briefly under a British-supervised transitional government sometimes referred to as a reestablished Southern Rhodesia, which according to British constitutional theory had remained the lawful government in the area after Unilateral Declaration of Independence (UDI) in 1965. Following the 1980 Southern Rhodesian general election, the country was granted internationally-recognized independence within the Commonwealth as the Republic of Zimbabwe.