31-MAY-1910 :- The Union Of south Africa Created.

The Union of South Africa is the historic predecessor to the present-day Republic of South Africa. It came into being on 31 May 1910 with the unification of four previously separate British colonies: Cape Colony, Natal Colony, Transvaal Colony and Orange River Colony. Following World War I, the Union of South Africa was granted the administration of the German South-West Africa colony as a League of Nations mandate and it became treated in most respects as if it were another province of the Union.

The Union of South Africa was founded as a dominion of the British Empire. It was governed under a form of constitutional monarchy, with the British monarch represented by a governor-general. The Union came to an end when the 1961 constitution was enacted. On 31 May 1961 the nation became a republic, under the name Republic of South Africa.