mentioned Barune as the constituent state of Hindu Majapahit, which had to make an annual tribute of 40 katis of camphor. In 1369, Sulu which was also formerly part of Majapahit, had successfully rebelled and then attacked Boni, and had invaded the Northeast Coast of Borneo and afterwards had looted the capital of its treasure and gold including sacking two sacred pearls. A fleet from Majapahit succeeded in driving away the Sulus, but Boni was left weaker after the attack. A Chinese report from 1371 described Boni as poor and totally controlled by Majapahit. The Bruneian Empire was established in the coastal regions of Sarawak by the mid-15th century, and the Kuching area was known to Portuguese cartographers during the 16th century as Cerava, one of the five great seaports of Borneo. It was also during this time that witnessed the birth of the Sultanate of Sarawak, a local kingdom that lasted for almost half a century before being reunited with Brunei in 1641. By the early 19th century, the Bruneian Empire was in decline, retaining only a tenuous hold along the coastal regions of Sarawak which were otherwise controlled by semi-independent Malay leaders. Away from the coast, territorial wars were fought between the Iban and a Kenyah-Kayan alliance. The discovery of antimony ore in the Kuching region led Pangeran Indera Mahkota, a representative of the Sultan of Brunei, to increase development in the territory between 1824 and 1830. Increasing antimony production in the region led the Brunei Sultanate to demand higher taxes, which ultimately led to civil unrest. In 1839, Sultan Omar Ali Saifuddin II (1827–1852) assigned his uncle Pangeran Muda Hashim the task of restoring order but his inability to do so caused him to request the aid of British sailor James Brooke. Brooke's success in quelling the revolt was rewarded with antimony, property and the governorship of Sarawak, which at that time consisted only of a small area centred on Kuching. The Brooke family, later called the White Rajahs, set about expanding the territory they had been ceded. With expansion came the need for efficient governance and thus, beginning in 1841, Sarawak was separated into the first of its administrative divisions with currency, the Sarawak dollar, beginning circulation in 1858. By 1912, a total of five divisions had been established in Sarawak, each headed by a Resident. The Brooke family generally practised a paternalistic form of government