seafare and marine operations. This has characterised the transportation and trading aspects of the region; central regions of Sumatra rely on this region to transport ocean foods and marine related goods, while Insular Riau is dependent on the central regions of Sumatra for import of foods and other goods.

Demographics

Sumatra has about 50 million people (census date 2000), making it the fourth most populated island in the world. There is a diverse range of ethnicities; the most predominant ethnic groups are the Malay,

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