Empire · since 1910 · Southern Africa
Union and Republic of South Africa
Also known as Union of South Africa, South Africa
The Union of South Africa was formed in 1910 from four British colonies, the Cape, Natal, Transvaal and Orange River, eight years after the Boer War. It was a self-governing dominion of the British Empire, but only white men, with limited exceptions in the Cape, could vote, and the Natives Land Act of 1913 confined Africans to a small share of the land.
Under Louis Botha and Jan Smuts it fought for Britain in both world wars. In 1948 the National Party won power and imposed apartheid, a rigid system of racial segregation enforced by pass laws, forced removals and violence against protest, such as the Sharpeville massacre of 1960. South Africa became a republic in 1961. Resistance and sanctions led F. W. de Klerk to free Nelson Mandela in 1990, and democratic elections in 1994 ended apartheid.

- Years
- since 1910
- Capital
- Pretoria (administrative), Cape Town (legislative), Bloemfontein (judicial)
- Greatest extent
- 1910, about 1.22 million km²
- Region
- Southern Africa
1,221,000 km²; roughly unchanged since union; South West Africa was also ruled from 1915 to 1990
Legacy
South Africa's peaceful transition to democracy and its 1996 constitution made Mandela a global symbol of reconciliation.
Rulers
- Louis Botha 1910–1919
First prime minister
- Jan Smuts 1919–1924, 1939–1948
Statesman who helped found the League of Nations and the UN
- D. F. Malan 1948–1954
Introduced apartheid
- Hendrik Verwoerd 1958–1966
Chief architect of apartheid; assassinated
- F. W. de Klerk 1989–1994
Freed Mandela and negotiated the end of apartheid
- Nelson Mandela 1994–1999
First democratically elected president
Realms on the map
- South Africa since 1932
Wars
- Second World War 1 September 1939 – 2 September 1945
- Korean War 25 June 1950 – 27 July 1953