Hawaii was the last state to join the United States in 1959, officially becoming the 50th state on August 21 of that year. Its annexation reflects a long and complex history, beginning with U.S. interests in the islands in the 19th century, marked by the establishment of sugar plantations and a significant American presence. Following the overthrow of the Hawaiian monarchy in 1893, Hawaii was annexed as a U.S. territory in 1898. The push for statehood gained momentum after World War II, as local leaders advocated for full recognition and rights as a state. Hawaii's admission was celebrated for its cultural diversity and strategic military significance in the Pacific.