King Chulalongkorn is regarded as one of the greatest kings of Siam. The oldest son of king Mongkut prince Chulalongkorn succeeded hid father in 1868 at the age of fifteen. Because of his immaturity Chaopraya Si Suriyawong served as regent for four years. During this time he traveled to neighboring western colonies including. Sing Java and India to study western politics administration lifestyle and colonialism .Later during his reign he also visited Europe twice in 1897 and 1907.