Category

Federations of British colonies and protectorates

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Union of South Africa

state in southern Africa from 1910 to 1961, predecessor to the Republic of South Africa

Federation of Rhodesia and Nyasaland

British territory from 1953 to 1963

West Indies Federation

federation of British colonies (1958–1962)

United States of the Ionian Islands

Ionian Islands under British protection (1815–1864), then ceded to the Kingdom of Greece

Federation of South Arabia

federal state under British protection in what would become South Arabia

Federation of Nigeria

African country from 1960 to 1963