What does it mean if countries are under trusteeship?

In my knowledge, if countries are under trusteeship, that means that there is suporvisory control by one or more countries over a trust territory. In other words, it's basically a non self-governing territory placed under an administrative authority by the Trusteeship Council of the UN.

the packers and the chiefs played in the first super bowl, which was held in los angeles in 1967. -is the sentence that would stand out the most when scanning a paragraph.