In the beginning of the 1820's,the U.S became to have economic relationship with Hawaii and then friend relationship,these relationship became more and more stronger,but later Washington learned that european powers like France,Great britain, later spain (which see economic privileges they can get too )were trying to force this country to have some inequal economic relation with them and later to invade the island.
As they were many american citizens in the island and for defending his interests in the island and in the pacific,the US decided to take control of the island
Personally I don't think its either of those, but if I were to choose one it would be the third. Those who live in glass houses should not throw stones.
