The Commonwealth of Alaska is a United States-administered overseas territory located in western North America. It is, along with the Commonwealth of American Polynesia and the Commonwealth of America Samoa, one of the three overseas territories of the United States. Alaska is sparsely populated outside of the cities of Anchorage, Fairbanks and the capital at Juneau and is mostly known for its vast oil and timber reserves. As of a landmark 1987 treaty, most of Alaska's mineral negotiation and royalty rights were devolved from federal control to the massive Native Alaskan reservations that were estalished that same year.