The last queen of Hawaii was Liliʻuokalani, who reigned from 1891 until 1893. She was the first and only reigning female monarch of Hawaii and played a significant role in advocating for her people and preserving Hawaiian culture. Liliʻuokalani sought to restore the power of the monarchy and enact a new constitution to counteract the influence of American and European settlers. However, her efforts led to her overthrow by a group of American businessmen and the U.S. government, which ultimately resulted in Hawaii's annexation by the United States.