Final answer:
Queen Liliuokalani requested the U.S. Senate to review the coup that overthrew her and restore her to power. Despite President Cleveland's support, the provisional government, led by American interest groups, opposed her restoration, leading to Hawaii's eventual annexation.
Step-by-step explanation:
Queen Liliuokalani asked the U.S. Senate to investigate the illegal overthrow of her government and to reinstate her to the throne. After her throne was seized in 1893 by American planters and a provisional government was established led by Sanford B. Dole, Queen Liliuokalani hoped that by surrendering under protest to the superior force of the United States military, she would later have a chance to plead her case in Washington, D.C. Indeed, President Grover Cleveland considered the overthrow of the Queen to be an illegal act of war, but despite his opposition to annexing Hawaii, the planters refused to restore Liliuokalani to power. The Queen's quest was one to assert political control and self-rule for native Hawaiians amidst economic turbulence caused by American tariffs and the dominance of sugar planters in Hawaiian politics.