King Rama V, also known as Chulalongkorn, was the fifth monarch of the Chakri Dynasty in Thailand. He reigned from 1868 to 1910 and is celebrated for modernizing the country. His reforms included improvements in education, infrastructure, and public health, which helped transform Thailand into a more progressive nation. During his reign, King Rama V also worked to abolish slavery and promote civil rights. He established a centralized government and introduced a legal system based on Western models. His efforts earned him respect both domestically and internationally, making him a significant figure in Thai history.