The Sultanate of Brunei (Malay: Kesultanan Brunei, Jawi: كسلطانن بروني) or simply Brunei ( broo-NY), also known as the Bruneian Empire, was a Malay sultanate centered around Brunei on the northern coast of Borneo in Southeast Asia. Brunei became a sovereign state around the 15th century, when it substantially expanded after the fall of Malacca to the Portuguese, extending throughout coastal areas of Borneo and the Philippines, before it declined in the 17th and 18th centuries. It became a British protectorate in the 19th century.
The limited evidence from contemporary sources poses a challenge in understanding the history of the early Bruneian Sultanate. No local or indigenous sources exist to provide evidence for this. As a result, Chinese texts have been relied on to construct the history of early Brunei. Boni in Chinese sources most likely refers to Western Borneo, while Poli (婆利), probably located in the Aceh region in Sumatra, is claimed by local authorities to refer to Brunei as well.
A renegade group from the kingdom of Funan in Cambodia found themselves in Borneo after escaping the Khmer invasion, which is where Brunei's historical roots lie. In honor of its ruler, Raja Kamrun, the early Arab explorers called this new country Kamrun. This name changed throughout time to become Muja, Zabaj, and finally Brunei. The history of the area was also affected by Srivijaya, from which rulers and their supporters fled to Brunei after Raja Sailendra conquered it. When these migrants took over Kamrun, the native population was forced to flee into the interior, which may have resulted in the rise of the Lun Bawang and Bisaya peoples.
The national history of Brunei alleges that Brunei is an ancient kingdom located in the Malay Archipelago, alongside other historical kingdoms such as Palembang Tua, Tarumanagara, Perlak, Pasai, Malacca, Gersik, and Demak.
During the Song dynasty, a polity in western Borneo called Boni was noted as a large and powerful state, ruling over 14 regions and boasting 100 warships. The people were known for their bravery in battle, wielding swords and spears, and wearing armour made of copper for protection against enemy attacks.
Rice cultivation was the main source of income for the people of Brunei, whose land was said to be extremely productive. Some also fished and reared chickens and goats. In addition to many other handicrafts, the ladies were adept at weaving fabric, creating mats, and constructing baskets. The capital of Brunei, which had around 10,000 residents, was encircled by wooden defences. Like the people's dwellings, the royal palace was covered with nipa palm leaves.
In 977, a Chinese merchant of Arab descent named P'u-lu-shieh (Fairuz Shah) arrived in Brunei for trade, receiving a warm welcome from the king and the local populace. Upon his return to China, the King requested P'u-lu-shieh to escort his envoy to the Chinese Emperor. P'u-lu-shieh agreed, and the royal delegation was led by Abu Ali (Pu Ya Li), Syeikh Noh (Shih-Nu), and Qadi Kasim (Koh-shin). They brought letters and gifts for the emperor, including 100 turtle shells, camphor, five pieces of agarwood, three trays of sandalwood, raksamala wood, and six elephant tusks. The letter included three main points: to inform the Emperor about P'u-lu-shieh's arrival in Brunei and his assistance in repairing the damaged ship; to send envoys to the Emperor as representatives, offering gifts on behalf of the king; and to request the Emperor's assistance in notifying the Champa government to ensure the safety of Brunei's ships stranded there due to storms. Since that time, the relationship between Brunei and China became increasingly close and friendly.
Known as the "Maritime Silk Road" or "spice road," Brunei's commerce networks were essential in linking it to other areas. As evidence of Brunei's early engagement in foreign affairs, King Hiang-ta of P'oni dispatched an embassy to China in 977. Brunei's historical significance is demonstrated by the fact that it was referred to by names like P'oli and P'oni during the Liang, Sui, Tang, Song, and Ming dynasties. In the Temburong District in particular, the term P'oni is still used today. In addition, the family of Awang Alak Betatar is thought to have established the old monarchy in Garang before moving to Kota Batu in 1397.
In the 14th century, Brunei seems to have been a subject of Java. The Javanese manuscript Nagarakretagama, written by Prapanca in 1365, mentioned Barune as the vassal state of Majapahit, which had to make an annual tribute of 40 katis of camphor.
After Majapahit invaded Brunei, its subject kingdoms in the Philippines which were formally under its control, rebelled against Brunei, chief of which was the former kingdom of Sulu which besieged and pillaged it.
Its (Brunei's) own empire gone, it would appear to have shrunk to its heartland by Brunei bay. It now paid an annual tribute of 40 kati of camphor to the Majapahit Emperor. But worse was to follow. 1369 marks the absolute nadir of Brunei's fortunes, for in that year its former subjects the Suluks put it to sack. So utterly helpless were the Bruneis, that they had to be rescued by the Majapahit fleet, which drove out the intruders, who departed laden with enormous booty and taking the two precious pearls.Later, China's Ming dynasty freed Brunei from paying tribute to the Majapahit, which in 1407 had been successfully pressured by show of force into apologising for their killing of Ming soldiers. The Bruneian royals visited China in 1408, and the Chinese emperor performed an investiture for Brunei's new ruler.
After the fall of Malacca to the Portuguese, Portuguese merchants traded regularly with Brunei from 1530 and described the capital of Brunei as surrounded by a stone wall. During the rule of Bolkiah, the fifth sultan, the sultanate controlled the coastal areas of northwest Borneo (present-day Brunei, Sarawak and Sabah) and reached Seludong (present-day Serudong River, Sabah) as well as the Sulu Archipelago.
During Bolkiah's reign, Brunei's influence extended to the southern Philippines, including Taguima (Basilan). The Tagimaha (Yakan) of Basilan were among the Sultan's most trusted naval allies, providing vessels and warriors for regional expeditions, reflecting Brunei's maritime reach across the Sulu Sea and its political and dynastic connections with Sulu and neighbouring coastal polities.
In the 16th century, the Brunei's influence extended as far as the Kapuas River delta in West Kalimantan. The Malay Sultanate of Sambas in West Kalimantan and the Sultanate of Sulu in the southern Philippines in particular developed dynastic relations with the royal house of Brunei. The Malay sultans of Pontianak, Samarinda and Banjarmasin, treated the Sultan of Brunei as their leader. The true nature of Brunei's relationship with other Malay sultanates of coastal Borneo and the Sulu Archipelago is still a subject of study, as to whether it was a vassal state, an alliance, or just a ceremonial relationship. Other regional polities also exercised their influence upon these sultanates. The Sultanate of Banjar (present-day Banjarmasin), for example, was also under the influence of Demak in Java. The growth of Malacca as the largest Southeast Asian entrepôt in the Maritime Silk Road led to a gradual spread of its cultural influence eastward throughout Maritime Southeast Asia. Malay became the regional lingua franca of trade and many polities enculturated Islamic Malay customs and governance to varying degrees, including Kapampangans, Tagalogs and other coastal Philippine peoples. Brunei gained influence in Luzon after the marriage of Salalila to the daughter of Sultan Bolkiah of Brunei and Puteri Laila Menchanai of Sulu, creating a union between the royal houses of Maynila, Brunei and Sulu. This union facilitated the spread of Islam in the coastal parts of central and southern Luzon. The Muslim rajahs of Maynila, like Rajah Matanda, for instance, had family-links with the Brunei Sultanate, as he was the grandson of Sultan Bolkiah.