trust territory

American  

noun

1. a territory under the administrative control of a country designated by the United Nations.

---

trust territory British  

noun

1. (sometimes capital) another name for a trusteeship

---

Example Sentences

The U.S. government administered the islands as a trust territory until they became fully independent in 1986, and the American military retains a major base on the islands to this day.

From Slate • Sep. 15, 2020

News from Nauru: It was 50 years ago that the U.N. trust territory of Nauru became its own nation, the Republic of Nauru.

From Time • Jun. 26, 2017

After the Second World War, they became a U.N. trust territory, administered by the United States.

From The New Yorker • Jul. 25, 2016

By 1986, Palau was the only trust territory left in Micronesia.

From New York Times • Mar. 1, 2016

After the Second World War - and a brutal occupation by Japan - Nauru became a UN trust territory.

From The 2008 CIA World Factbook by United States. Central Intelligence Agency