Protectorates and protected states were foreign territories to which British protection was extended in some form.
Protected states were places in which:
Protectorates were protected territories in which:
Britain's involvement in protectorates was similar to its involvement in colonies but they did not have the formal status of colonies.
A mandated territory was a territory administered by the government of any country in the former British Empire by a mandate from the League of Nations (which later became the United Nations). They were created because, in the 1920 Treaty of Versailles, Germany renounced its claims to its former colonies and, where those countries were unable to become independent, others took responsibility for their government. The United Kingdom, Australia, New Zealand and South Africa accepted these mandates.
A trust territory was a territory administered by the government of any country in the former British Empire under the trusteeship system of the United Nations. Most mandated territories became trust territories under the United Kingdom's Mandated and Trust Territories Act 1947. The others became independent, apart from Palestine, which became part of the new state of Israel, and South West Africa, which continued to be a mandated territory administered by South Africa.
A UK mandated or trust territory was one administered by the British Government. Non-UK mandated or trust territories were administered by Australia, New Zealand, or South Africa.
British nationality law differed depending on whether a territory was a mandated or trust territory, and on whether or not it was a UK mandated or trust territory. This affected, for example, whether or not someone born there would be a British subject.
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