King Chulalongkorn was the fourh son of King Mongkul, Rama IV,and Queen Debsirindramat. Born on 20th September 1853, he ascended the throne of Siam when he was only 15 year old and was on the throne for 42 year. During his reign, he placed an emphasis on several reforms that brought Thailand into the modern age. For instance,he introduced postal and telegraph service, and constructed a railway network, bridges, and irrigation canals. He also initated a new form of administration and established puplic education. Among his outstanding achievements were the abolition of slavery and the application of peaceful ways to resolve conflicts. He was able to put an end to internal conflicts and halting aggression from foreign countries with amiability and prudence.