The Kingdom of Sarawak was a state in Borneo established by Sir James Brooke

James Brooke

James, Rajah of Sarawak, KCB was the first White Rajah of Sarawak. His father, Thomas Brooke, was an English Judge Court of Appeal at Bareilly, British India; his mother, Anna Maria, born in Hertfordshire, was the illegitimate daughter of Scottish peer Colonel William Stuart, 9th Lord Blantyre,...

 in 1842 by receiving independent kingdom status from the Sultanate of Brunei as a reward for helping fight piracy and insurgency. In 1888 Charles Anthony Johnson Brooke, the successor of James Brooke, accepted a British Protectorate, which it remained until 1946, when the third ruler Charles Vyner Brooke

Charles Vyner Brooke

Vyner, Rajah of Sarawak, GCMG was the third and final White Rajah of Sarawak.-Early life:...

 ceded his rights to the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

. Since 1963, Sarawak

Sarawak

Sarawak is one of two Malaysian states on the island of Borneo. Known as Bumi Kenyalang , Sarawak is situated on the north-west of the island. It is the largest state in Malaysia followed by Sabah, the second largest state located to the North- East.The administrative capital is Kuching, which...

 has been a state of Malaysia.
Sarawak was part of the Sultanate of Brunei in Borneo

Borneo

Borneo is the third largest island in the world and is located north of Java Island, Indonesia, at the geographic centre of Maritime Southeast Asia....

.