Inner Cambodia
Inner Cambodia was a historical region in present-day Cambodia that was under the direct rule of Siam (Thailand) between 1794 and 1907. It covered much of north-western Cambodia, and included, most significantly, the cities of Phra Tabong, Siemmarat and Si Sophon (now known by the Khmer names Battambang, Siem Reap, and Serei Saophoan).