King George Tupou I was the first king of Tonga, reigning from 1875 until his death in 1893. He is known for unifying the islands of Tonga and establishing a constitutional monarchy, which helped to modernize the nation. His leadership was marked by efforts to promote education and infrastructure development. Under his rule, Tonga gained international recognition and strengthened its sovereignty. King George Tupou I also played a significant role in maintaining peace among the islands and fostering relationships with other nations, including Great Britain and the United States. His legacy continues to influence Tongan society today.