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What is the name of the country that was formed by unifying four British colonies?
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The country that was formed by unifying four British colonies is South Africa. The South Africa Act 1909, an act of the Parliament of the United Kingdom, unified four British coloniesCape Colony, Transvaal Colony, Orange River Colony and Natal Colonyinto the Union of South Africa, a self-governing Dominion. The Republic of South Africa Constitution Act, 1961 transformed the Union into a Republic, replacing the Queen with a State President, but otherwise leaving the system of government unchanged.