Wikipedia
Sumbawa is an Indonesian island, in the middle of the Lesser Sunda Islands chain, with Lombok to the west, Flores to the east, and Sumba further to the southeast. It is part of the province of West Nusa Tenggara, but there are presently steps being taken by the Indonesian government to turn the island into a separate province. Traditionally the island is known as the source of sappanwood used to make red dye, as well as honey and sandalwood. Its savanna-like climate and vast grassland is used to breed horses and cattle and to hunt deer.
Sumbawa has an area (including minor offshore islands) of (three times the size of Lombok) with a current population (January 2014) of around 1.39 million. It marks the boundary between the islands to the west, which were influenced by religion and culture spreading from India, and the region to the east that was less influenced. In particular this applies to both Hinduism and Islam.