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Holy wars

The arrival of the Portuguese and Spanish and their holy wars against Muslim states in the Malayan–Portuguese war, Spanish–Moro conflict and Castilian War inflamed religious tensions and turned Southeast Asia into an arena of conflict between Muslims and Christians. The Brunei Sultanate's capital at Kota Batu was assaulted by Governor Sande who led the 1578 Spanish attack.

The word "savages" in Spanish, cafres, was from the word "infidel" in Arabic - Kafir, and was used by the Spanish to refer to their own "Christian savages" who were arrested in Brunei. It was said Castilians are kafir, men who have no souls, who are condemned by fire when they die, and that too because they eat pork by the Brunei Sultan after the term accursed doctrine was used to attack Islam by the Spaniards which fed into hatred between Muslims and Christians sparked by their 1571 war against Brunei. The Sultan's words were in response to insults coming from the Spanish at Manila in 1578, other Muslims from Champa, Java, Borneo, Luzon, Pahang, Demak, Aceh, and the Malays echoed the rhetoric of holy war against the Spanish and Iberian Portuguese, calling them kafir enemies which was a contrast to their earlier nuanced views of the Portuguese in the Hikayat Tanah Hitu and Sejarah Melayu. The war by Spain against Brunei was defended in an apologia written by Doctor De Sande. The British eventually partitioned and took over Brunei while Sulu was attacked by the British, Americans, and Spanish which caused its breakdown and downfall after both of them thrived from 1500 to 1900 for four centuries. Dar al-Islam was seen as under invasion by "kafirs" by the Atjehnese led by Zayn al-din and by Muslims in the Philippines as they saw the Spanish invasion, since the Spanish brought the idea of a crusader holy war against Muslim Moros just as the Portuguese did in Indonesia and India against what they called "Moors" in their political and commercial conquests which they saw through the lens of religion in the 16th century.

In 1578, an attack was launched by the Spanish against Jolo, and in 1875 it was destroyed at their hands, and once again in 1974 it was destroyed by the Philippines. The Spanish first set foot on Borneo in Brunei.

The Spanish war against Brunei failed to conquer Brunei but it totally cut off the Philippines from Brunei's influence, the Spanish then started colonizing Mindanao and building fortresses. In response, the Bisayas, where Spanish forces were stationed, were subjected to retaliatory attacks by the Magindanao in 1599-1600 due to the Spanish attacks on Mindanao.

The Brunei royal family was related to the Muslim Rajahs who in ruled the principality in 1570 of Manila (Kingdom of Maynila) and this was what the Spaniards came across on their initial arrival to Manila, Spain uprooted Islam out of areas where it was shallow after they began to force Christianity on the Philippines in their conquests after 1521 while Islam was already widespread in the 16th century Philippines. In the Philippines in the Cebu islands the natives killed the Spanish fleet leader Magellan. Borneo's western coastal areas at Landak, Sukadana, and Sambas saw the growth of Muslim states in the sixteenth century, in the 15th century at Nanking, the capital of China, the death and burial of the Borneo Bruneian king Maharaja Kama took place upon his visit to China with Zheng He's fleet.

The Spanish were expelled from Brunei in 1579 after they attacked in 1578. There were fifty thousand inhabitants before the 1597 attack by the Spanish in Brunei.

During first contact with China, numerous aggressions and provocations were undertaken by the Portuguese They believed they could mistreat the non-Christians because they themselves were Christians and acted in the name of their religion in committing crimes and atrocities. This resulted in the Battle of Xicaowan where the local Chinese navy defeated and captured a fleet of Portuguese caravels.