American Imperialism.
The sugar plantation owners.
In 1898.
The Hawaiian Islands.
The reason there is no answer is because it wasn't. No treaty of annexation ever took place. Hawaii is an occupied nation state.
It was formerly another group who wanted to overthrow the Hawaiian Monarch Government of Hawaii which was the "Hawaiian League" also now known as the "Annexation Club".
Yes, the Hawaiian Islands are a result of a convergent plate boundary. The Pacific Plate is moving northwestward and is being subducted beneath the North American Plate, which has created the volcanic activity that formed the islands.
The unsuccessful attempt to maintain native control of the Hawaiian Islands was led by Queen Liliʻuokalani in the early 1890s. Following the overthrow of the Hawaiian monarchy in 1893, she sought to restore her rule and the sovereignty of her people. Her efforts ultimately failed, leading to the annexation of Hawaii by the United States in 1898.
Joseph Verdi Graff has written: 'Remarks of Hon. Joseph V. Graff, of Illinois, on the annexation of the Hawaiian Islands, in the House of representatives, June 15, 1898 ...' -- subject(s): Annexation to the United States
Elijah Adams Morse has written: 'The Hawaiian Islands ...' -- subject(s): Colonial question, Annexation to the United States, Speeches in Congress
False.
Regionally the Hawaiian Islands are a part of Polynesia.