Page "League of Nations mandate" Paragraph 60

After the United Nations was founded in 1945 and the League of Nations was disbanded, all but one of the mandated territories that remained under the control of the mandatory power became United Nations trust territories, a roughly equivalent status.

In each case, the colonial power that held the mandate on each territory became the administering power of the trusteeship, except that Japan, which had been defeated in World War II, lost its mandate over the South Pacific islands, which became a " strategic trust territory " known as the Trust Territory of the Pacific Islands under United States administration.