| 1 | 1910 | - 31 May 1910—31 May 1961: Union of South Africa
The Union of South Africa came into being with the unification of the Cape Colony, the Natal Colony, the Transvaal, and the Orange River Colony. It included the territories that were formerly a part of the South African Republic (1852 to 1902) and the Orange Free State (1854-1902).
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1947 - 1947 (0 years)