What prompted the united stated to decide annex Hawaii?

1. Strategic Location: Hawaii's strategic location in the Pacific Ocean made it a valuable asset for the United States. The islands provided a potential naval base and a stopover for ships traveling between the U.S. West Coast and Asia.

2. Economic Interests: American businesses, including sugar and pineapple plantations, had significant investments in Hawaii. The U.S. government wanted to protect these economic interests and ensure continued access to Hawaii's resources.

3. Native Hawaiian Sovereignty: The Kingdom of Hawaii, led by Queen Lili'uokalani, faced internal political challenges and a growing influence of American settlers. Some American planters and businessmen felt that annexation would be a way to ensure stability and protect their interests.

4. Manifest Destiny: The belief in Manifest Destiny, the idea that the United States had a divine right to expand its territory across the continent, also influenced the decision to annex Hawaii. Some Americans saw Hawaii as a natural extension of the U.S. and felt it should be brought under American control.

5. Pressure from Americans in Hawaii: American citizens living in Hawaii, known as "Annexationists," actively lobbied for annexation. They argued that it would benefit the islands economically and politically, and that it was the best way to ensure the rights of American citizens in Hawaii.

The combination of these factors led to the U.S. decision to annex Hawaii in 1898. The Hawaiian monarchy was overthrown and replaced by a provisional government, which negotiated the annexation treaty with the United States. Hawaii was officially annexed by the U.S. on August 12, 1898, becoming a U.S. territory. It was later granted statehood in 1959, becoming the 50th state of the United States.