History of Palawan

massacre of American POWs by Japanese soldiers during World War II in Palawan, Philippines

1945 battle between the US and Japan

left|upright=0.67|thumb|An example of a Jade Lingling-o from [[Palawan island, Sandao "三嶋" which included Palawan was a source of high quality carved Jade that was exported.]]Sāndǎo (), also known as Sanyu () and Sanshu (; ), were a collection of a prehispanic Philippine polities recorded in Chinese annals as a nation occupying the islands of (present-day Calamian), (present-day Palawan), and (possibly Pulilan, near present-day Manila). In the Chinese Gazetteer the Zhūfān zhì 諸蕃志 (1225), they were described as tributary states of the more powerful nation of Ma-i () centered in nearby Mindoro.