Complex sentence: During the reign of King Rama I, it was attached to the Ministry of Interior, until the reign of King Rama V who changed the administration system, Chachoengsao became a city in the Prachin Buri Circle.
Split into simpler sentences: During the reign of King Rama I, it was attached to the Ministry of Interior. Until the reign of King Rama V who changed the administration system, Chachoengsao became a city in the Prachin Buri Circle.