Mangsee Islands
| Mangsee Islands | |
|---|---|
| Barangay | |
.svg)
 Mangsee Islands
|
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| Coordinates: 07°57′N 117°01′E / 7.950°N 117.017°ECoordinates: 07°57′N 117°01′E / 7.950°N 117.017°E | |
| Barangay | 1 |
| Area | |
| • Total | 0.4 km2 (0.2 sq mi) |
| Time zone | PST (UTC+8) |
The Mangsee Islands are a group of two small islands in the far south west portion of the Philippines. The group comprises North Mangsee Island and South Mangsee Island. Together they form a barangay within the Balabac, a municipality of the province of Palawan. As at the time of the 2010 Census the population of the Mangsee Islands was 8,433.
Together with the Turtle Islands the barangay enjoys the historical distinction of being territory that was not under Philippine administration at the time of independence in 1946. This is due to their unique history. By an international treaty concluded in 1930 between the United States (in respect of its then overseas territory, the Philippine Archipelago) and the United Kingdom (in respect of its then protectorate, the State of North Borneo) the two powers agreed the international boundaries between those respective territories. In that treaty the United Kingdom also accepted that the Turtle Islands as well as the Mangsee Islands were part of the Philippines Archipelago and therefore under United States sovereignty. However, by a supplemental international treaty concluded at the same time, the two powers agreed that those islands, although part of the Philippines Archipelago, would remain under the administration of the State of North Borneo's British North Borneo Company. The supplemental treaty provided that the British North Borneo Company would continue to administer those islands unless and until the United States government gave notice to the United Kingdom calling for administration of the islands to be transferred to the United States. The United States never gave such a notice. On 4 July 1946, the Republic of the Philippines was born. It became the successor to the United States under the treaties of 1930. On 15 July 1946, the United Kingdom annexed the State of North Borneo and, in the view of the United Kingdom, became the sovereign power with respect to what had been the State of North Borneo. On 19 September 1946, the Republic of the Philippines notified the United Kingdom that it wished to take over the administration of the Turtle Islands and the Mangsee Islands. Pursuant to a supplemental international agreement, the transfer of administration became effective on 16 October 1947.
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