The Hawaiian Kingdom flourished throughout the 19th century with several monarchs. It became increasingly westernized. The United States became the major trading partner and protected the Kingdom of Hawaii from takeover by Japan. The vast sugar plantations attracted workers from across the world, especially from Japan, as the native Hawaiians refused to work for pay. | The Hawaiian Kingdom flourished throughout the 19th century with several monarchs. It became increasingly westernized. The United States became the major trading partner and protected the Kingdom of Hawaii from takeover by Japan. The vast sugar plantations attracted workers from across the world, especially from Japan, as the native Hawaiians refused to work for pay. |