Final answer:
Sanford B. Dole
Step-by-step explanation:
The person who headed the government in Hawaii after the U.S. overthrew Queen Liliuokalani in the late 1890's was Sanford B. Dole. He was a Hawaiian-born son of American-born missionaries and served as the president of the provisional government. Dole was supported by a group of American planters who revolted against the queen's authority and sought to annex Hawaii to the United States.